Disable prompt to reboot for new carrier settings - Samsung Galaxy S20 FE Questions & Answers

I have the S20 5g SE U1 unlocked from samsung. It keeps on automatically changing my CSC from XXA to att.. I don't want that. I can use it but only with that prompt in front of everything making usability pretty useless. I cannot find the system app which is causing it to try and change my CSC otherwise I'd disable it in ADB. Any ideas?
Edit: I tried the paid Chimera and it doesn't make it stay on XAA for the CSC>.<

the prompt will probably come from system UI.
so the prompt says what exactly ?
and do you have an AT&T simcard in the phone ?

3mel said:
the prompt will probably come from system UI.
so the prompt says what exactly ?
and do you have an AT&T simcard in the phone ?
Click to expand...
Click to collapse
The prompt tells me it detected a new sim card and that it wants to reboot for carrier settings :/ Its when I put in my at&t sim card. Is it okay to disable system UI?
"SERVICE PROVIDER UPDATE
Your device will restart to configure features supported by the new sim card."

kyky7kyle7 said:
The prompt tells me it detected a new sim card and that it wants to reboot for carrier settings :/ Its when I put in my at&t sim card. Is it okay to disable system UI?
"SERVICE PROVIDER UPDATE
Your device will restart to configure features supported by the new sim card."
Click to expand...
Click to collapse
can't swear to it but it sounds like it just wants to put settings for mobile data and maybe the AT&T service options onto the phone.
I don't think it wants or could change your CSC.
someone mentioned in another post that your firmware is 99% identical apart from a few bits for the carrier / network. I'd just click it and let it reboot. if you swapped simcard afterwards it would probably ask you to do again.
you definitely DON'T want to try and disable system UI

3mel said:
can't swear to it but it sounds like it just wants to put settings for mobile data and maybe the AT&T service options onto the phone.
I don't think it wants or could change your CSC.
someone mentioned in another post that your firmware is 99% identical apart from a few bits for the carrier / network. I'd just click it and let it reboot. if you swapped simcard afterwards it would probably ask you to do again.
you definitely DON'T want to try and disable system UI
Click to expand...
Click to collapse
Every time I am forced to click it and it does change my csc to att until I take out the sim card.

you're probably on multi CSC firmware then with all the major US carriers included in it.
I don't the you need to worry about it changing, as you say it's matching the simcard you have in there (just AT&T are fussier than other networks to insist the phone does this for them) I'd guess.
if you had the dual sim model and didn't use a memory card it would be interesting to see what it would do with two cards in there the whole time.

3mel said:
can't swear to it but it sounds like it just wants to put settings for mobile data and maybe the AT&T service options onto the phone.
I don't think it wants or could change your CSC.
someone mentioned in another post that your firmware is 99% identical apart from a few bits for the carrier / network. I'd just click it and let it reboot. if you swapped simcard afterwards it would probably ask you to do again.
you definitely DON'T want to try and disable system UI
Click to expand...
Click to collapse
Yeah everytime it switches my csc which then disables my free hotspot :/ Samsung is selling out to carriers ever since 3.1 :'(

I was in the states in 2013 and remember T-Mobile wouldn't let me tether any devices to my phone beyond 100 or 200mb, and that was with me paying 150 dollars for just 2 months line rental. that would've paid for 1 years unlimited broadband in the UK. tight little gits your networks.

Related

gophone sim does not prompt sim unlock code

I have a weird issue, and was hoping that maybe someone could shed some light on what I am seeing.
I just got a used G1 on ebay, which I want to unlock. When I put an ATT GoPhone sim in and boot the phone, I am not prompted for a sim unlock code. It is not unlocked, I know the this as I do not connect to the ATT network at all and cannot modify any of the APN settings on the phone. I know that I need the prompt for sim unlock to actually unlock the phone. Fortunately, I just found an old international sim laying around and that one seems to trip the prompt for the sim unlock. My questions - why does the GoPhone sim not cause the phone to prompt me for an unlock code?
Thanks for your time.
Hmmm that is a good one. I used a normal att sim and it asked for the code, is it a older sim? Maybe one from the cingular days? To weird man.
the gophone sim is a new sim, just purchased and activated. I know the sim is okay, because I can use fine in another phone.
I have an unlock code on order. Hopefully, using my other sim to trigger the code request, I will be able to do the unlock. Hopefully, then, the gophone sim will work fine. I hope to post positive results back later.
thanks
Yea you can unlock it with any sim and switch to another and it will work. I know a few people on here use att gophone sims so you should be fine.
so I was able to sim-unlock the phone using a different sim.
I still have a real problem though - when I put the gophone sim in, I still find myself unable to connect. I even go to settings>wireless controls>Mobile Networks>Network operators and try to manually select at&t. When I do, it says "registering on at&t" for a while and then says "Your SIM card does not allow a connection to this network". Again, I know this sim works - I have been using it in another phone.
What do you think I am doing wrong?
Thanks
It sounds like something is ****ed up with the sim, even though it works for the other phone. Do you have any friends with att sims? Something really sounds off here and if it isn't sim related then I don't know what it could be.
will try to find someone with an AT&T sim, but I don't know what the deal is. I even tried an international sim (that should roam on t-mobile here), but I could not get that to connect. I have tried putting in a tmboile sim and that seems to be the only thing I can to talk to a network
As a side note, no APNs show under settings>wireless controls>Mobile Networks>Network>Access point names when I put non-tmobile sims in. When I add one, it still does not show up on the list.
arg
no more advise? any where else I can ask for help?
Thanks,
Ryan
uiucryan said:
no more advise? any where else I can ask for help?
Thanks,
Ryan
Click to expand...
Click to collapse
what rom are you using?
cyanogenmod 4.0.4, but the initial problem was being seen with multiple roms
thats odd because i thought he had the large apn file in his rom
david1171 said:
thats odd because i thought he had the large apn file in his rom
Click to expand...
Click to collapse
from what i read that is true - but I do not see them
to note I just loaded "The HTC ADP 1.5 CRC1 ROM" from
http://forum.xda-developers.com/showthread.php?t=538456 and still I cannot seem to connect to at&t
uiucryan said:
from what i read that is true - but I do not see them
to note I just loaded "The HTC ADP 1.5 CRC1 ROM" from
http://forum.xda-developers.com/showthread.php?t=538456 and still I cannot seem to connect to at&t
Click to expand...
Click to collapse
i'm sorry i do not know more about the apn side of things i have a tmobile contract so i don't have to worry about that. sorry
I will open a new thread as the thread title no longer accurately reflects the issue.
Thanks,
Ryan
There is a thread for ALL APN's in one of these dream forums. try that one, make sure you save the APN when you enter it to, dont just hit home or whatever.
crpercodani said:
There is a thread for ALL APN's in one of these dream forums. try that one, make sure you save the APN when you enter it to, dont just hit home or whatever.
Click to expand...
Click to collapse
I do click save and it does not show up on list.
FIXED!!!!
To note, I finally got connected to the At&t network.
Please see http://forum.xda-developers.com/showthread.php?p=4469651 to see how I finally got connected.
Thanks to those who helped

Cannot manually provision phone

Hello,
I have been trying to activate my new phone on ring plus. It is an LG LS991. I am on the ZV6 firmware. I have done a device swap and have been in contact with Ringplus. They said that everything that is OK on their end and my phone will not provision. I tried to enter ##MSL# and nothing happens. I do not see an edit menu. I am entering my actual MSL code just to clarify that. Is there a way to get a hidden menu on the G4 that will allow me to edit the MDN & MIN numbers?
Thanks!!!
Try ##873283#
Thanks did not work for me though. Would restoring a .tot and maybe reset it if its a software glitch?
##data#
Cannot really access anything from that menu, I am just returning the phone today because something is wrong with it.
LG g4 works on SIm card So u cannot provsion it mannualy
U need a Sprint Blank simcard to acitvate it
did you happen to modify your carrier folder from the sim unlock mod? Changing the permission of node.db and node.db-journal to all read write execute fixed the provision issue for me.
chwilson2013 said:
Hello,
I have been trying to activate my new phone on ring plus. It is an LG LS991. I am on the ZV6 firmware. I have done a device swap and have been in contact with Ringplus. They said that everything that is OK on their end and my phone will not provision. I tried to enter ##MSL# and nothing happens. I do not see an edit menu. I am entering my actual MSL code just to clarify that. Is there a way to get a hidden menu on the G4 that will allow me to edit the MDN & MIN numbers?
Thanks!!!
Click to expand...
Click to collapse
Any head way on this? How can you access the service menu to edit the MDN and MSID?
Thanks
I'm having the same problem. Can't get this G4 to work on old Sprint SERO - ESN is right but I can't update MIN or MDN any way I try. Anyone figure this out and could help?
thanks
mxsmith said:
I'm having the same problem. Can't get this G4 to work on old Sprint SERO - ESN is right but I can't update MIN or MDN any way I try. Anyone figure this out and could help?
thanks
Click to expand...
Click to collapse
You can try the hidden menu apk I listed in the gsm unlock page it might get you in to help
TheMadScientist said:
You can try the hidden menu apk I listed in the gsm unlock page it might get you in to help
Click to expand...
Click to collapse
Yeah, I had tried that. But it doesn't seem that any of the information will save properly; after a reboot, it still does not give me the right MDN. That is with or without the sim card. With the sim card ii, it gives me the last four of the cards ICCID as the phone number with 000-000-XXXX. Not sure if G4 just will not work b/c I don't have a SIM programmed (it is just an unused sprint sim)? But my sero plan is 3g only, really don't need the lte stuff or sim at all. Without sim card I just get MDN and phone number as 'unknown'.
I think this is probably easier with boost or another carrier; curious if ANYONE has ever activated a g4 on SERO basic?
mxsmith said:
Yeah, I had tried that. But it doesn't seem that any of the information will save properly; after a reboot, it still does not give me the right MDN. That is with or without the sim card. With the sim card ii, it gives me the last four of the cards ICCID as the phone number with 000-000-XXXX. Not sure if G4 just will not work b/c I don't have a SIM programmed (it is just an unused sprint sim)? But my sero plan is 3g only, really don't need the lte stuff or sim at all. Without sim card I just get MDN and phone number as 'unknown'.
I think this is probably easier with boost or another carrier; curious if ANYONE has ever activated a g4 on SERO basic?
Click to expand...
Click to collapse
is sero a gsm carrier or cdma
Its CDMA. Its true sprint, its just an old employee plan. I never added in the LTE/4G service.

Enable Volte and VOWIFI on unlocked note 8

Hi,
I've an Galaxy Note 8 (canadian, SM-N950W), buyed directly from samsung, so it's factory unlock and not in any carrier database.
My carrier offer Volte and Vowifi on S7, S7 Edge, and iPhone. I've an Volte capable sim card, and the volte component is activated in my account whit my carrier (i've an S7 edge in my carrier database).
Now, i want to get it to work whit my note 8. I've done many search on the web, and found nothing that work. I've try to get a shortcut for the ims settings, but it said "not found any csc feature", and the apps won't open.
After that, i've thinked about many other alternative, but i'm not sure if it will work, that the reason i'm asking before doing anything wrong and brick my phone. I know all the samsung carrier-specific function is on the CSC. I can just root and edit the config file, but i don't want to void my warranty, and get limited to 80% of charge.
So, another thing i'm thinking, is to flash the s7 edge CSC on my note 8, that already have the volte function enabled on it. Will it work, because it's not the same model?
I've tried too opening my firmware (downloaded from the web for my carrier), extract it, but when it's time to access the csc img.ext4 file, i get a "corrupted archive" from winrar, that let me doing anything.
Any ideas? Thank!
dardares said:
Hi,
I've an Galaxy Note 8 (canadian, SM-N950W), buyed directly from samsung, so it's factory unlock and not in any carrier database.
My carrier offer Volte and Vowifi on S7, S7 Edge, and iPhone. I've an Volte capable sim card, and the volte component is activated in my account whit my carrier (i've an S7 edge in my carrier database).
Now, i want to get it to work whit my note 8. I've done many search on the web, and found nothing that work. I've try to get a shortcut for the ims settings, but it said "not found any csc feature", and the apps won't open.
After that, i've thinked about many other alternative, but i'm not sure if it will work, that the reason i'm asking before doing anything wrong and brick my phone. I know all the samsung carrier-specific function is on the CSC. I can just root and edit the config file, but i don't want to void my warranty, and get limited to 80% of charge.
So, another thing i'm thinking, is to flash the s7 edge CSC on my note 8, that already have the volte function enabled on it. Will it work, because it's not the same model?
I've tried too opening my firmware (downloaded from the web for my carrier), extract it, but when it's time to access the csc img.ext4 file, i get a "corrupted archive" from winrar, that let me doing anything.
Any ideas? Thank!
Click to expand...
Click to collapse
My logic says, surely the easiest way would be to
flash your carriers Note 8 stock Rom with Odin
If this is possible. This way you most likely to keep
everything official. (Knox etc)
I was in a similar situation.
In my case i had a branded Note 8 and
unintentionally flashed unbranded Samsung firmware.
I did not also have volte and wifi calling etc.
No shortcuts work
So i flash my correct branded carrier firmware
All was working again.
I have no carrier branded bloat, as i uninstalled
them.
This for me was the easiest option
Good luck.
Thank for replying willcor
In your case, can you access the ims settings shortcut? And then, enable Volte and get it to work?
Are you rooted? And does the note 8 is officialy supported by your carrier?
FInaly, can i just flash the csc whit odin so i will keep my file, or i need to flash the complete rom, and loosing my data?
Thank!
dardares said:
Thank for replying willcor
In your case, can you access the ims settings shortcut? And then, enable Volte and get it to work?
Are you rooted? And does the note 8 is officialy supported by your carrier?
FInaly, can i just flash the csc whit odin so i will keep my file, or i need to flash the complete rom, and loosing my data?
Thank!
Click to expand...
Click to collapse
Firstly, i am not rooted. Stock branded carrier firmware.
As i already had my sim enabled for volte, wifi calling
etc with carrier i re flashed the carrier firmware
Volte appeared "automatic" after flashing. (Short while later ) For me the easiest way.
It was unintentionally that i had flash unbranded
Samsung firmware.
I was originally on branded firmware.
(Vodacom /Vodafone.)
I soft bricked my device while
beta testing.
When i was on this unbranded Samsung firmware
i noticed that there was no volte, wifi calling
and no stock Hiya spam software. etc.
I used QuickShortcutMaker to try and enable
shortcut to wifi calling. No luck.
I'm only suggesting you check this option out
... if possible, then surely it the best way to go.?
Further just flashing to change CSC gave me all sorts of
issues.
I landed up having XEF (France) and my device showing 32 gig storage.! Instead of 64 gig.
then flashing again i landed up on XFE (SAMSUNG)
Sorted storage out to 64 gig.
Then again i Flashed carrier firmware
4 x files ( did not flash home CSC but the other CSC
which resetted device and all is well and knox 0 x0
Bottom line is that
all my previous devices are rooted. So i knew what i was doing.
When i soft bricked my device etc.
so i did not panic.
So i suggest make sure or
look for a relevant video etc on YouTube
if not sure
Yes you are going to lose your data. So do a backup.
Flashing the "home CSC" basically is a dirty
flash.. You don't loose anything.
Which i think is not going to help you.?
Good luck.
Hi,
I've flashed the firmware of an operator that support the note 8, but still not any settings for it in the phone app setting. Can't still access ims setting too.
dardares said:
Hi,
I've flashed the firmware of an operator that support the note 8, but still not any settings for it in the phone app setting. Can't still access ims setting too.
Click to expand...
Click to collapse
for me the ,the best option /scenario would be .....
1) Your service provider that you enabled volte ,wifi calling etc with .
2) Further your sim requirements ,for me i had to have sim 64 or higher ( with correct CSC of carrier .)
3) Then obviously that same service provider ( above ) stock Note 8 firmware ,if compatible with your Note 8 model /device etc .
According to what i experience surely , above should be enough to get it enabled .?
Plse note.....
i would not use another carrier firmware etc ,
(as in this case) just because it should have similar firmware .
Try to align your options ,to make it easier .!
This for me should be an key option ,not another provider that has similar functions etc .
Remember you got no root ,would prefer to keep knox 0 x 0 etc .
so your options are limited .?
good luck
Hi,
Still not getting it to work. But today, i've noticed LTE+ icon appear intermittent. It's switch to 3G when i place call.
No any settings of VOLTE.
Can't find any solution to root my phone (snapdragon), because i've the new update. I'm pretty sure it's a way to get it to work, but don't know how. It's just software issues because my operator was activated it in my account.
Hi,
Finaly, after 3 !!! factory reset, gessing whit 3 different carrier, i've activated it, i've it in the settings.
Now, when i make a call, it switch to 4G. I think it's the APN. I know my carrier need 3 apn for the VOLTE, and still have only one. I will try to find the 3 apn setting today.
For the vowifi, i see it in the notification center, a toggle to activate it, but it's do nothing.
I've successfully found the ims, there are 4 for my operator. But i can't find the IMS APN type in the option given in the phone.... How i can enable it?
dardares said:
I've successfully found the ims, there are 4 for my operator. But i can't find the IMS APN type in the option given in the phone.... How i can enable it?
Click to expand...
Click to collapse
If you want it to be easier call your carrier and have them add the imei # to their database then the imei will be whitelist and reprovisioned...then you can just use the unlocked firmware or the full carrier Firmware...
BlueFox721 said:
If you want it to be easier call your carrier and have them add the imei # to their database then the imei will be whitelist and reprovisioned...then you can just use the unlocked firmware or the full carrier Firmware...
Click to expand...
Click to collapse
Try this video. I literally JUST did this after WEEKS of looking for an answer.
watch?v=gjFs4ksDdtg
P.S. Won't let me enter a link so this is the video on "you tube".
gknight1971 said:
Try this video. I literally JUST did this after WEEKS of looking for an answer.
watch?v=gjFs4ksDdtg
P.S. Won't let me enter a link so this is the video on "you tube".
Click to expand...
Click to collapse
I have posted many times with the same info...Several others have as well..
Thanks for sharing though...just search IMS BlueFox721 in XDA search and you will get more info than the video explains as there are other settings to do as well..
Thanks again for sharing
that video and related info is only to add the missing features if you are not on the right csc.
but it wont fix the issue where the carrier is only allowing imei from phones they sell to use these enhanced voice features. In the case of Rogers and others, you can try calling them all you want but in the end they wont do squat to white list your imei. maybe some other providers will yeild to your requests but Rogers is know to not white list non carrier phones.
I successfully got HD Voice turned on and working. But no sign of Wi-Fi calling. I was searching through shortcutmaster and came across a menu where I can turn on wifi calling. It isnt grayed out, however it wont actually toggle over. The screenshot posted is from tapping the menu dots in the top right part of the screen. I assume I need these filled in to enable it. Any ideas on how to populate the right info. Im on verizon, but got the Note 8 from Samsung, carrier unlocked. SM-N950U1
hb
wdcspurs said:
I successfully got HD Voice turned on and working. But no sign of Wi-Fi calling. I was searching through shortcutmaster and came across a menu where I can turn on wifi calling. It isnt grayed out, however it wont actually toggle over. The screenshot posted is from tapping the menu dots in the top right part of the screen. I assume I need these filled in to enable it. Any ideas on how to populate the right info. Im on verizon, but got the Note 8 from Samsung, carrier unlocked. SM-N950U1
Click to expand...
Click to collapse
How you turn on Volt?

Question Help me fix it

Hello guys. I bought a s21 ultra 9980 512gb.
However, i cant use it with sim card as its not detecting the network. I dont get it what could be the problem. I cant even untick the automatic network search as i get error.
Will post you guys here some photos maybe you can help me out. I dont think is locked because i dont get any message when i insert sim to enter the unlock code. What could be the problem?
Please help. Thx
Are you sure its an active sim card?
Yes. I have the card in an iphone as its my current sim..
JesuisAmy said:
Yes. I have the card in an iphone as its my current sim..
Click to expand...
Click to collapse
Is the Samsung running official FW?
Yes… original .
do you still have the imei number present in the settings and if you type *#06# ?
Might be sim locked by the carrier, you could theoretically still use the esim I believe if it isn't giving you an option to enter an unlock code.
Yes.. both imei show up.
How can i check for sure its sim locked?
Also, when i insert any sim, for one second the “no signal sign” near the battery goes away then comes back instant.. and it doesnt ask for any pin…
Thanks for your inputs
I have read about this issue before as well. Is this a "dual sim" model? Try the other slot if it is, and also try leaving the sim in and rebooting. You could also try "reset network settings" under settings. I'll have a look to see if I can find the thread where people said they had a fix.
is it yours from brand new? and have you checked to see if it black listed? also, there seems to be an issue with some Samsung where they are forced into airplane mode the only way you see this is the notification panel the airplane model toggle is half-lit blue I could be something to do with that. Failing that it could also be if you have dropped the device the ribbon may have come loose as this is a common issue with Samsung a range and that's all I'm seeming to fix lately
Hello. No, didnt buy new. I got it used.Yes its dual sim model. It doesnt appear as blacklisted.
Its not in airplane mode for sure. Also i did factory reset and also wrote all stock firmware ap cm bl csc from samfirmware..but its the same as before.
Also, esim doesnt show up under the sim card manager.
try *#2263#* to change bands, or *#0011#
Maybe also try to put the sim in the other slot, and see what happens. If all the same, try someone elses SIM card for a minute to see. Maybe your sim has become slightly damaged but your iphone still manages to read it, while for some reason the s21 is not managing.
Just tried the sim in my sisters s20 and works. Also tried her sim into this new phone and same . Even if i put in sim1 or sim2.
JesuisAmy said:
Just tried the sim in my sisters s20 and works. Also tried her sim into this new phone and same . Even if i put in sim1 or sim2.
Click to expand...
Click to collapse
Sounds blacklisted to me
How can i find out if its really blacklisted or its the ribbon as galaxys2tav said?
I checked imeis and also serial number and its not blaclisted
See?
JesuisAmy said:
See?
Click to expand...
Click to collapse
Found this online:
"In Settings go to network mode and set this to 3G only. Then restart your phone. This works in my case."
Thanks for your sugestion. But its the same…
I had the same issue on single sim korean unit...but factory reset resolved the issue. Actually i used to disable carrier apps which was causing this issue.

SM-G973U VoLTE

I recently bought an unlocked Galaxy S10 SM-G973U on Amazon. Got new SIM card from a Verizon MVNO and activated phone. The phone downloaded Android 12, One UI version 4.0. Firmware Build number SP1A210812.016.G973USQS6HVA1. Service provide Software version SAOMC_SM-G973U_OYN_SPR_12_0007 SPR/XAA/VZW. The problem is there is no menu option to activate/switch on VoLTE which means when I'm on a call there is no internet. I've talked to the MVNO tech support multiple times and was told they couldn't see any problems on their side, or that the SM-G973U does not support VoLTE which is not true. I found on one of AT&T's sites that the SM-G973U needs a software patch to enable VoLTE. I also found a couple of USSD codes but they either didn't work or didn't get me to the right setup screen to turn on VoLTE. I even stopped by a Samsung store and they weren't any help either. They said they could re-flash a stock firmware but it would revert to being locked to a carrier which is apparently also not true based on what I've read on this forum. Anyone know how I can turn on VoLTE or know of an apk file or software patch to enable VoLTE?? Does one of the firmware versions posted online have the patch to turn on VoLTE??
I think the issue is that your phone is showing SPR/XAA/VZW. You say you're on a verizon MVNO (who, by the way?)... but your phone isn't seeing that. It's actually saying it's active for SPRint. The second one, XAA, means it's not able to detect the SIM type... and the third was that it was originally VZW, which you can't change and isn't really relevant. (That's just what the phone was "born" as).
Bottom line, your phone isn't seeing VZW or an MVNO as the active CSC nor the SIM card. In the past, the easy thing was to change the CSC to what you need, but I haven't found a way to do that actively. What's supposed to happen is that the CSC should update based on the SIM card and cell signal you're getting... but this doesn't always happen. I bought two phones - one switched with no issues, the other I could not get it to change no matter what I tried.
That said, the easiest thing is to clean flash the phone with ODIN to a VZW or your MVNO's ROM, so that (hopefully) the CSC updates automatically. You could also consider flashing a U1 (unlocked) ROM, as yours is not technically an unlocked ROM (U means it's a carrier ROM... which may be why it's not switching over?)
Again, I tried all of these on the second phone I bought, and nothing would switch it (my carrier is Total Wireless, which is a VZ MVNO, and actually shows up as Tracfone (TFN). I had to return that second phone and get another with TFN already activated, and that worked fine... so be sure you do this before you drop out of your return period.
Bottom line, you should be able to get this all working... my VOLTE/VOWIFI works fine... just a matter of getting you there.
Thanks. My carrier is Straight Talk which is now VZ. The SIM card they sent me has the wording "Verizon Compatible" written on it. I finally found a document that explains how to interpret the CSC codes and your explanation clarifies my understanding of it. Sound like I'll have to re-flash it. Since it was originally a VZW phone I'm thinking I should flash it back to VZW to see if that works before trying U1.
Dumb question as this is my first time flashing a phone. (I've flashed quite a few other things but never had to worry about CSC codes and bootloader versions, etc.) I don't see VZW firmware on samfirms or sammobile. I see Sprint, T-Mobile, and one listed as USA without carrier info but I don't see one for VZW. Can someone point me to the correct location to download SM-g973U and U1 firmware for VZW? Greatly appreciated and thanks for putting up with my lack of knowledge!
Edited: Found the files on sammobile. Will try the U1 (VZW) first. I'll keep my fingers crossed.
schwinn8 said:
I think the issue is that your phone is showing SPR/XAA/VZW. You say you're on a verizon MVNO (who, by the way?)... but your phone isn't seeing that. It's actually saying it's active for SPRint. The second one, XAA, means it's not able to detect the SIM type... and the third was that it was originally VZW, which you can't change and isn't really relevant. (That's just what the phone was "born" as).
Bottom line, your phone isn't seeing VZW or an MVNO as the active CSC nor the SIM card. In the past, the easy thing was to change the CSC to what you need, but I haven't found a way to do that actively. What's supposed to happen is that the CSC should update based on the SIM card and cell signal you're getting... but this doesn't always happen. I bought two phones - one switched with no issues, the other I could not get it to change no matter what I tried.
That said, the easiest thing is to clean flash the phone with ODIN to a VZW or your MVNO's ROM, so that (hopefully) the CSC updates automatically. You could also consider flashing a U1 (unlocked) ROM, as yours is not technically an unlocked ROM (U means it's a carrier ROM... which may be why it's not switching over?)
Again, I tried all of these on the second phone I bought, and nothing would switch it (my carrier is Total Wireless, which is a VZ MVNO, and actually shows up as Tracfone (TFN). I had to return that second phone and get another with TFN already activated, and that worked fine... so be sure you do this before you drop out of your return period.
Bottom line, you should be able to get this all working... my VOLTE/VOWIFI works fine... just a matter of getting you there.
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Success! Was able to flash U1. VoLTE is now working. The CSC now shows TFN/TFN/VZW. Much appreciated!!!
Awesome, glad to hear that fixed it easily!
And TFN... I'm a fan there, too!
Hi! I'm having a similar issue with the same model and happy to see someone was able to enable VoLTE. However, most of what you said above is a foreign language to me. Would one of you be willing to give me a crash course in what you did?
Here's my specific situation. Last week (~1/4/23) Tracfone shutdown 3G. My Samsung Galaxy S10 (SM-G973U) says my network is set to LTE/3G/2G. I've read LTE is 4G, but still can't make or receive calls/texts, but data and 911 calls still work. Their tech support is no help.
From reading online it sounds like I may need VoLTE, not just LTE. Hence finding this thread. If one of you would be willing to spare some time to walk me through what you did I'd really appreciate it. In the mean time I'll try to figure out what "flashing" mean in a context that doesn't involve showing body parts
Thank you in advance!!
I'm on Tracfone (they were bought out by Verizon, BTW) - I was on Total Wireless before, which is now Total by Verizon. You might try contacting support again, as they are now VZ, and may have more help to offer.
My S10+ is running 975U1 now, and it works for VOLTE/VOWIFI properly. You may consider getting a U1 ROM installed, and maybe even the VZW (or TFN) version if available - that may get you working.
Did VOLTE ever work for you before on this or any other carrier? What is your CSC right now?
schwinn8 said:
I'm on Tracfone (they were bought out by Verizon, BTW) - I was on Total Wireless before, which is now Total by Verizon. You might try contacting support again, as they are now VZ, and may have more help to offer.
My S10+ is running 975U1 now, and it works for VOLTE/VOWIFI properly. You may consider getting a U1 ROM installed, and maybe even the VZW (or TFN) version if available - that may get you working.
Did VOLTE ever work for you before on this or any other carrier? What is your CSC right now?
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Thanks for replying! I'm not entirely sure if VoLTE has worked previously. I bought this phone 6/2021 and have only haver had tracfone service for it. I did find in my setting that VoLTE calling is set to on so it seems like it should work. Of note, the 4Glte in my status bar has always been grayed out (I went back and looked at some old screenshots).
My current CSC is VZW/XAA/ATT.
I spoke with tracfone customer service yesterday and they had me reset my network setting and now I don't even have data and the 4Glte in my status bar that was previously gray has now completely disappeared.
Their customer service refuses to talk to me now (literally no one answers when it transfers to an agent) or they hang up on me, and no I haven't been rude, but I have told them I'm recording the call.
I bought a mint mobile package last night because I'm beyond frustrated with Tracfone. I'm worried I'll have the same problems with Mint. I'm not sure if my settings are screwed up or if it's just Tracfone. In any case things are worse now after talking to customer service yesterday.
I also notice there was no APN setting on my phone so I updated it today and restarted but no difference.
Thanks for any input!! Much appreciated. Sorry for the novel.
Ok, so based on your CSC, the phone is not seeing the SIM's carrier - it's showing XAA which means it's using the default settings, which is probably why your not getting VOLTE. The active CSC of "VZW" may be ok... depends on which carrier you're on with Tracfone. I think they're VZW only, but I'm not completely sure.
You may want to just get a new SIM card and get that activated. HOWEVER, the problem you'll likely face is that the phone was born ATT (last CSC). This means the IMEI won't match a "compatible" phone to Verizon, and they will flat out refuse to activate it (even though WE al know it will work fine). If you still want to do that, you will have to activate the new SIM on a VZ "compatible" phone, then you can swap it to the S10. Note that VZ complains about this when you talk to them... so don't tell them you're doing this... but I've done it many times and it works fine.
If your actual behind-the-scenes carrier is ATT, then you can do the activation with your phone without issue.
If none of this works for you, you can switch carriers to an ATT MVNO and you should be good to go.
schwinn8 said:
Ok, so based on your CSC, the phone is not seeing the SIM's carrier - it's showing XAA which means it's using the default settings, which is probably why your not getting VOLTE. The active CSC of "VZW" may be ok... depends on which carrier you're on with Tracfone. I think they're VZW only, but I'm not completely sure.
You may want to just get a new SIM card and get that activated. HOWEVER, the problem you'll likely face is that the phone was born ATT (last CSC). This means the IMEI won't match a "compatible" phone to Verizon, and they will flat out refuse to activate it (even though WE al know it will work fine). If you still want to do that, you will have to activate the new SIM on a VZ "compatible" phone, then you can swap it to the S10. Note that VZ complains about this when you talk to them... so don't tell them you're doing this... but I've done it many times and it works fine.
If your actual behind-the-scenes carrier is ATT, then you can do the activation with your phone without issue.
If none of this works for you, you can switch carriers to an ATT MVNO and you should be good to go.
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OK some of that was still over my head. I'll see what happens with the Mint Sim... one f/u question now though. You said the ATT means my phone was "born" ATT. I bought my phone off backmarket and it was sold as "unlocked". Was that not true? How can I be sure in the future if I buy a used phone that's not from my carrier that it will actually be compatible?
Unlocked just means it's not locked to a carrier. That is true in your case, otherwise you wouldn't have been able to install ANY non-ATT SIM. So, you did the right thing to get an unlocked phone, and that is what you got.
The issue with compatibility is just the asshole carriers spreading lies. They do this to try to get people to buy THEIR phones, for no reason other than to make money and confuse consumers. The "born" CSC has no bearing on anything, really... neither does the carrier-specified IMEI. In your case, the XAA is good, which means it's a multi-carrier ROM, which works with all USA carriers.
Mint is a good idea - being an ATT carrier (IIRC), that should work and they should help you get it up and running even if they have to activate it. Good luck!
Awesome! Fingers crossed!! Thank you for your time and all the info❣
I'll try to remember to give an update in a few weeks for future readers
Goldie8709 said:
Awesome! Fingers crossed!! Thank you for your time and all the info❣
I'll try to remember to give an update in a few weeks for future readers
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Click to collapse
UPDATE: Switching to Mint worked like a charm! Once my number ported and I put the new SIM card in, service was instantaneous! I've had Mint for 3 weeks now and the service is so much better than with Tracfone! My calls go through nearly as soon as I hit call, the internet is faster.
I didn't need to do a thing either. No making APN settings, etc. I'm betting it has to do with what you said about my phone being born ATT. So funny because the software(?) is Verizon - shows the Verizon when I restart/power up. I still love my bastard phone
So thankful I didn't buy a different phone!!! Again thanks for all your help @schwinn8
Thanks for reporting back and letting us all know, and I'm glad it worked out well!
Yeah, the carriers pull this nonsense all the time... it's BS. The phones are all the same, only the ROM changes. If we can change ROMs (which we can) then there should be no reason to force users to specific IMEIs. But we know why they do this - follow the money. I encourage people to write to the FTC and FCC about this (I have).

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