Limited service - Can't make a phone call SM-G973N - Samsung Galaxy S10 Questions & Answers

Hi. I just flashed a my Samsung SM-G973N (CSC: Korea SK Telecom; Exynos 9820). I am not in Korea. I inserted my local SIM card and the phone does not recognized it. It does not request for an 'unlock code' when I turn it on. Rest of the phone is fine.
The phone is not rooted. Can you help me fix it?

If I am reading the screen correctly, the last line says that the IMEI is "NG" which may mean "Not Good" or "No Good"... this would imply that the phone has been blacklisted or it's not unlocked.
I don't know Exynos phones that well, so it could be something else, but this is where I would start.

schwinn8 said:
If I am reading the screen correctly, the last line says that the IMEI is "NG" which may mean "Not Good" or "No Good"... this would imply that the phone has been blacklisted or it's not unlocked.
I don't know Exynos phones that well, so it could be something else, but this is where I would start.
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Thank you. It's odd because the cell service was working before.

I know in the USA, carriers will sometimes lock the phone to their network, which means you cannot move to another network. So, if you just changed carriers, then that may be why the IMEI is "NG"... unless, of course, we're dealing with a language/translation issue, haha!
I would suggest putting the other SIM back in, and seeing if the "NG" changes. Ideally, if you can use the other carrier for a month, you may try that to see that it works, which would imply that the new SIM is physically bad/defective, or that the phone may be carrier-locked. If it's carrier locked, you may need to contact the "old" company to have them unlock it, so you can move to a different carrier. This is not something the user can do here in the US... the carrier has to do this.

Related

[Q] Stock Note 3 lose Unlock after Sent back to Repair

Hi to all
I have a Stock AT&T Note 3 on KitKat, And I bought the unlock code from a website and the Code was working fine
I sent my phone to the Samsung repair center in TX to fix the memory card slot problem.
After a week they sent the phone back to me, and Of course the phone is back to the original settings
When I turned on the phone and inserted my T-mobile Sim card, the phone is asking me for the network
unlock code, so I entered the same code that I used before and it is not working ...
Thanks
You probably didn't get the exact phone you sent them. They probably sent a different one. Check for an old receipt, or the original box for the imei code. See if it's different then the new one. It most likely is. If it is, you will need to obtain a new unlock code.
I checked the IMEI number and they matched
I also thought of that it might have to do with the unlock code
so I ordered another Unlock code from a different site
and it turned out to be the SAME Unlock code from the other site !!
Yes there's only 1 unlock code per imei. It doesn't matter where you obtain the code, it will be the same.
I hate to tell you this, but you'll need to contact the warranty dept and probably send the phone back. Again :'(
440bro said:
Yes there's only 1 unlock code per imei. It doesn't matter where you obtain the code, it will be the same.
I hate to tell you this, but you'll need to contact the warranty dept and probably send the phone back. Again :'(
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Do you think this has anything to do with the Region lock restriction ?
No I don't believe it to be related to region lock.
Check one more thing for me please. Verify that the imei of the phone is what you believe it to be. Open settings and in "about phone" check under status and verify the imei is what you think it is. You can also Press * # 0 6 # on your keypad, Press 'Call' or 'Send' as if making a call. Your IMEI number will be retrieved and displayed on your screen.
440bro said:
No I don't believe it to be related to region lock.
Check one more thing for me please. Verify that the imei of the phone is what you believe it to be. Open settings and in "about phone" check under status and verify the imei is what you think it is. You can also Press * # 0 6 # on your keypad, Press 'Call' or 'Send' as if making a call. Your IMEI number will be retrieved and displayed on your screen.
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Yea.. they are the same.. I still have the original box and they matched !!
I am contacting Samsung right now, let see what they can do about it
Ok, keep us posted please. And good luck!
440bro said:
Ok, keep us posted please. And good luck!
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do you know anything about this ?
NOTES: If you have a Samsung Galaxy S3, S4, Note 2, Note 3 or your Android version is Android 4.4 (KITKAT): All SAMSUNG devices manufactured after the date of JULY 2013 and Samsung devices running on Android version is Android 4.4 (KITKAT) are subject to REGION LOCKING. If your phone has been used previously with the original carrier, this will not apply to you. However, if your device is BRAND NEW, your must activate it with the original carrier. If your Samsung device becomes Region locked, you will not be able to fully factory Unlock your Samsung devices so it can be used internationally. Even the correct code will not work anymore. In order for your Samsung device NOT to be region locked, you MUST activate (FIRST USE) your S3, S4, NOTE 2, NOTE 3 with your ORIGINAL carrier at least ONCE to take your region lock OFF. After your Region lock is off, you can Sim Unlock your device via Unlock Code. All Canadian Carriers are NOT subject to Region Locking. All USA and European Carriers ARE subject to Region Locking. Region lock is removed automatically after you activate your device with its original carrier. Make some calls before unlocking. (Insert an active original sim card into the device and make a few calls to activate the phone and bypass the region lock. Once you've activated the phone, you can input the unlock code.)
Well after reading that I'm amazed. I believed region lock was based on where you lived and used the phone. Like a person in Europe couldn't use an at&t phone overseas until it was used in the states. I was unaware a person in the U.S. had to do the same if they were using it in the U.S. but with a different carrier. My apologies.
You wouldn't happen to know anyone on at&t would you? Maybe a Samsung rep in bestbuy can help you with borrowing an at&t sim and making a call or 2 on your phone.
440bro said:
Well after reading that I'm amazed. I believed region lock was based on where you lived and used the phone. Like a person in Europe couldn't use an at&t phone overseas until it was used in the states. I was unaware a person in the U.S. had to do the same if they were using it in the U.S. but with a different carrier. My apologies.
You wouldn't happen to know anyone on at&t would you? Maybe a Samsung rep in bestbuy can help you with borrowing an at&t sim and making a call or 2 on your phone.
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I tried to use someone's ATT sim and it doesnt work
Also Samsung is telling me that "as you have unlocked the device from third party site , and this is not considered as official unlock for the device"
I might bring the phone to bestbuy and let them check it out.. since the phone is still under Warranty
There's defiantly something wrong if an at&t sim doesn't work. Are you the original owner? If not do you know the original purchaser? It could have been blacklisted.
440bro said:
There's defiantly something wrong if an at&t sim doesn't work. Are you the original owner? If not do you know the original purchaser? It could have been blacklisted.
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The phone is working Fine with an ATT sim card, it has signals
it is just that it is not working after I inserted my tmobile sim card
and entered in the unlock code... So the imei should be fine !
I believe you need approximately 5 to 15 minutes of use on an at&t sim card from my previous readings of other user experiences.
440bro said:
I believe you need approximately 5 to 15 minutes of use on an at&t sim card from my previous readings of other user experiences.
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Will try that out.. I am running out of solutions !!

Carrier Sim lock after Samsung repair

So I bought a Sprint Note 8 (SM-N95OU) that was unlocked from eBay over a year ago. We use T-mobile for our service. Everything was going good until the phone would no longer boot up due to draining all the way to 0%. Called Samsung and they did a free replacement outside of warranty.
So now that it's been repaired it is UICC SIM carrier locked.
Under UICC unlock it says "your device is locked to Sprint SIMS only." A message pops up and says to contact sprint. I contact sprint and give the IMEI and they said I have to contact the owner. I assume they never unregistered it from their account.
Is there anyway we can go back to using the phone? I mean we paid for it and feel like we own it but according to the software it does not seem to be the case. Lol.
Will putting a Sprint SIM in unlock It? I notice it doesn't ask for a pin and I think I read they are unlocked via a signal. That signal would have to be resent or would communication on the Sprint network alone unlock it. Not sure If somehow it will know to unlock itself once it connects to sprints network?
Anyway any help or direction is appreciated. Not sure if I need to sell it to a Sprint user and get a different phone now.
Well I just paid somebody on eBay 10$ to unlock it. So far so good.
I had a very similar situation whichresulted in weeks of back-and-forth communication between Samsung and Sprint advanced technical support. Which that department is a joke in and of itself but the actual solution to my problem was just to insert an active Sprint SIM card into the device and then have them unlock it.

Question Verizon S21 Ultra Locked and not unlocking

I appear to be in one of those samsung lock horror stories. I purchased a paid off verizon s21 ultra that was suppose to be unlocked but after i put my tmobile sim into it works for 5 minutes perfectly then an error pops up saying unable to change carrier call verizon customer support. So i did long story short i got no where. So i filed an FCC complaint and got in contact with a verizon executive and he got in contact with who i bought the phone from and they provided all the paperwork proving it was paid off and he reprocessed the unlock request and said it will now for sure be unlocked and it didnt unlock so i contacted samsung like he said for me to do if it didnt so i did and they told me to wait 48 hours for it to process. 48 hours later guess what its still not unlocked so i call samsung back and they said verizon still hasnt released it supposedly and there is nothing they can do and i need to go back to verizon. Im stuck in an endless loop of verizon executives telling me to call samsung and samsung telling me to call verizon.
What is there left for me to do now? This is stupid why is it not unlocking... The only thing that i can think is left is that the phone is flashed with stock firmware and not verizon firmware to remove the bloatware. But that seems like it shouldnt matter. Also the phone never asks for an unlock code it just says call verizon customer service.
It's more a Verizon lock horror, not Samsung.
Flashing other FW won't solve your issue.
OnnoJ said:
It's more a Verizon lock horror, not Samsung.
Flashing other FW won't solve your issue.
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Any other tips you have?
Return to seller and demand refund...
DodgeTransmissionsGoBoom said:
I appear to be in one of those samsung lock horror stories. I purchased a paid off verizon s21 ultra that was suppose to be unlocked but after i put my tmobile sim into it works for 5 minutes perfectly then an error pops up saying unable to change carrier call verizon customer support. So i did long story short i got no where. So i filed an FCC complaint and got in contact with a verizon executive and he got in contact with who i bought the phone from and they provided all the paperwork proving it was paid off and he reprocessed the unlock request and said it will now for sure be unlocked and it didnt unlock so i contacted samsung like he said for me to do if it didnt so i did and they told me to wait 48 hours for it to process. 48 hours later guess what its still not unlocked so i call samsung back and they said verizon still hasnt released it supposedly and there is nothing they can do and i need to go back to verizon. Im stuck in an endless loop of verizon executives telling me to call samsung and samsung telling me to call verizon.
What is there left for me to do now? This is stupid why is it not unlocking... The only thing that i can think is left is that the phone is flashed with stock firmware and not verizon firmware to remove the bloatware. But that seems like it shouldnt matter. Also the phone never asks for an unlock code it just says call verizon customer service.
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First, did you verify that the unit is paid off?
Second, do you know anyone that has verizon?
Don't know if it will work, but I would try flashing the unit back to stock Verizon firmware and finding someone who has a verizon sim card.
Verizon units kind of unlock on their own. It is troubleshooting I would try because I do not believe the unit will unlock on U1 software on its own. Once it can get unlocked then flash back.
I suggest someone who has a verizon active SIM as it may help in it unlocking even though you can connect through WIFI
yygemmi770 said:
First, did you verify that the unit is paid off?
Second, do you know anyone that has verizon?
Don't know if it will work, but I would try flashing the unit back to stock Verizon firmware and finding someone who has a verizon sim card.
Verizon units kind of unlock on their own. It is troubleshooting I would try because I do not believe the unit will unlock on U1 software on its own. Once it can get unlocked then flash back.
I suggest someone who has a verizon active SIM as it may help in it unlocking even though you can connect through WIFI
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Click to collapse
The verizon executative said it was guaranteed paid off and he unlocked it remotely again. But it does have u1 firmware on it im guessing i need to use frija and download the vzw firmware? And will another unlock request need to be processed again? And none of my friends have verizon due to how much of a ripoff they are lmao but i can have another verizon demo sim put in at another verizon store. I feel like i would have to file anpther fcc complaint just to talk to another verizon executive.
DodgeTransmissionsGoBoom said:
The verizon executative said it was guaranteed paid off and he unlocked it remotely again. But it does have u1 firmware on it im guessing i need to use frija and download the vzw firmware? And will another unlock request need to be processed again? And none of my friends have verizon due to how much of a ripoff they are lmao but i can have another verizon demo sim put in at another verizon store. I feel like i would have to file anpther fcc complaint just to talk to another verizon executive.
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I believe for it to be unlocked or at least go through the process, the verizon U package is what I would flash, but you may be in a little bit of a issue if you don't have a verizon SIM on hand, even if not activated.
There are multiple ways to get it to flash back to U. I would use a patched ODIN and just flash the appropriate files from somewhere like samfw.com
If he sent out the remote unlock, it is very possible that once you flash back to U verizon package and connect to WIFI and go through the setup process etc. It may just unlock on its own. If you do not have a Verizon SIM card, leave your SIM out of the phone while going through the initial setup. You will need WIFI.
I would start with a clean flash just to be safe.
yygemmi770 said:
I believe for it to be unlocked or at least go through the process, the verizon U package is what I would flash, but you may be in a little bit of a issue if you don't have a verizon SIM on hand, even if not activated.
There are multiple ways to get it to flash back to U. I would use a patched ODIN and just flash the appropriate files from somewhere like samfw.com
If he sent out the remote unlock, it is very possible that once you flash back to U verizon package and connect to WIFI and go through the setup process etc. It may just unlock on its own. If you do not have a Verizon SIM card, leave your SIM out of the phone while going through the initial setup. You will need WIFI.
I would start with a clean flash just to be safe.
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What's a patched Odin? I've only used regular Odin can you send a link to the patched one?
VERIZON FIRMWARE FLASHING UNLOCKED IT!!!!!!!!!!!!!!!!
DodgeTransmissionsGoBoom said:
VERIZON FIRMWARE FLASHING UNLOCKED IT!!!!!!!!!!!!!!!!
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BAM!!!!! Glad it worked! I work with phones all day long and that was the protocol I would have used glad it worked out!
DodgeTransmissionsGoBoom said:
VERIZON FIRMWARE FLASHING UNLOCKED IT!!!!!!!!!!!!!!!!
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Hello, I have encountered the same problem. Can you tell me the solution to this problem?
chen2luqi said:
Hello, I have encountered the same problem. Can you tell me the solution to this problem?
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You literally quoted the answer
Verizon firmware has an app called "Network Unlock". Perhaps at the 60 day mark, the phone automatically unlocks. However, if on the unlocked U1 firmware, there is no framework to remove the lock. It'd be interesting to see exactly how the Verizon unlock process works.
Guyinlaca said:
Verizon firmware has an app called "Network Unlock". Perhaps at the 60 day mark, the phone automatically unlocks. However, if on the unlocked U1 firmware, there is no framework to remove the lock. It'd be interesting to see exactly how the Verizon unlock process works.
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It is somehow tied into their U package software and I am assuming unlocks it at the modem level in background processes. It's like the "signal" they send out can only be detected on their U package. I've seen it many times where Verizon phones automatically unlock themselves when restored to original package from U1.
yygemmi770 said:
It is somehow tied into their U package software and I am assuming unlocks it at the modem level in background processes. It's like the "signal" they send out can only be detected on their U package. I've seen it many times where Verizon phones automatically unlock themselves when restored to original package from U1.
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I can confirm this works on my s21+ that was on verizon network, and was supposedly networked unlocked. Service carrier software said vzw/vzw, vzw/vzw. Tried to switch to tmobile with no luck with sim card swap. 5 minutes, error message about cannot which carriers, please call Verizon. Was on SM-996U1. So I tried to flash to SM-996U1 TMB, then SM-996U1 VZW, then, SM-996U1 XAA. No luck. Then I flashed, hesitantly, with SM-996U VZW . I thought that would put all verizons bloatware on it. Reseted phone and it did put all verizon bloatware on it. Then the magic! I installed my new tmobile sim, and a message appeared and asked if I wished to switch carriers. YES!!! phone rebooted to tmobiles network with no verizon errors. I checked service carrier software and it was TMB/TMB, VZW/VZW. I flashed phone again to SM-996U1 XAA. I rebooted and service carrier software was TMB/TMB, TMB/VZW! I then checked for software update, took update, and all it good! Thanks for all the information here. Took me days to find it and understand it and try it!!
Hi, folks. I am facing the same issue with my S21 5G (SM-G991U). I am also told that the phone paid off and clean. I am not sure what version I am on currently. I have tried SamKey, but that didn't work. Any help would be appreciated. Thank you in advance.
hoorrus said:
Hi, folks. I am facing the same issue with my S21 5G (SM-G991U). I am also told that the phone paid off and clean. I am not sure what version I am on currently. I have tried SamKey, but that didn't work. Any help would be appreciated. Thank you in advance.
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Does your device boot up Verizon and have all the Verizon apps?
bigkahuna7660 said:
I can confirm this works on my s21+ that was on verizon network, and was supposedly networked unlocked. Service carrier software said vzw/vzw, vzw/vzw. Tried to switch to tmobile with no luck with sim card swap. 5 minutes, error message about cannot which carriers, please call Verizon. Was on SM-996U1. So I tried to flash to SM-996U1 TMB, then SM-996U1 VZW, then, SM-996U1 XAA. No luck. Then I flashed, hesitantly, with SM-996U VZW . I thought that would put all verizons bloatware on it. Reseted phone and it did put all verizon bloatware on it. Then the magic! I installed my new tmobile sim, and a message appeared and asked if I wished to switch carriers. YES!!! phone rebooted to tmobiles network with no verizon errors. I checked service carrier software and it was TMB/TMB, VZW/VZW. I flashed phone again to SM-996U1 XAA. I rebooted and service carrier software was TMB/TMB, TMB/VZW! I then checked for software update, took update, and all it good! Thanks for all the information here. Took me days to find it and understand it and try it!!
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From my experience, Verizon phones will not unlock unless on the U package, the U1 never allows the unlock to be processed.
yygemmi770 said:
Does your device boot up Verizon and have all the Verizon apps?
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It does not boot up with Verizon but it does have a few Verizon apps included (it has Call Filter and Digital Secure) installed. The current version of the software is G991USQS6EWD5. Service provider version is SQOMC_SM-G991U_OYN_SPR_13_0020 SPR/SPR,SPR/VZW.
hoorrus said:
It does not boot up with Verizon but it does have a few Verizon apps included (it has Call Filter and Digital Secure) installed. The current version of the software is G991USQS6EWD5. Service provider version is SQOMC_SM-G991U_OYN_SPR_13_0020 SPR/SPR,SPR/VZW.
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Are you using this phone with Verizon service? From info you provided, your phone thinks you are using Sprint. It's a SPR CSC. You need to change the CSC to VZW. You need to bring the phone back to it's original state for any attempt of the unlock "processing".

Emergency calls only after stock room flash

Hi. I flashed a stock room with Odin in my Samsung S10 (SM-G973F). The phone is made in Argentina so i installed a free carrier ROM from there, then after i flashed the ROM from my country but in no case i can get my SIM to work on it. What i can do?
Edit: Aparently i have a imei status: NG.
IMEI status NG likely means that the carrier has blacklisted your IMEI, and is refusing the activate it. IMEIs are often blacklisted because the phone is stolen or for various other reasons.
In the USA, carriers will work together on IMEI blacklisting, but I don't know how it works in other countries...
schwinn8 said:
IMEI status NG likely means that the carrier has blacklisted your IMEI, and is refusing the activate it. IMEIs are often blacklisted because the phone is stolen or for various other reasons.
In the USA, carriers will work together on IMEI blacklisting, but I don't know how it works in other countries...
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The phone it's from Argentina. I'm almost sure that it's not stolen, but i supose that it was unlocked by someone else before i got it into my possession, and then when i flashed stock rom i messed up the unlock. The imei doesn't appear in any blacklist page (even the one from my country). There is a way to restore the unlock with Samsung Tool Pro or changing the IMEI? (changing IMEI en my country it is legal)
I don't know about the Samsung Tool Pro. I also don't believe XDA allows discussion about IMEI changing, but yes I think it can be done. You may need to find another place to discuss this.
If you're reasonably sure that the IMEI is fine, you could call your carrier and ask them what is happening. Maybe they just need to fix something on their end?
I got the same problem too when I tried upgrading me S10e G970F to android 12, it started showing "Emergency calls only"
Roi_emeka said:
I got the same problem too when I tried upgrading me S10e G970F to android 12, it started showing "Emergency calls only"
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Have you fixed it yet, I'm having same issue, anyone help pls
bump

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.
Click to expand...
Click to collapse
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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Click to collapse
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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Click to collapse
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
Click to expand...
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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