Database Develop

[Q] How to use the phone in global mode (GSM)?

Ok, I feel like a n00b with this, but recently i bought a Droid Bionic on ebay, i got it now, but i want to use it for Telcel GSM, when i insert the sim card, i got the message that the sim card is from an unknown source, i never got that message before on another phone, i heard that the ICS update activates the global roaming on the Droid Bionic, but i don't know how to activate it, because of that message i cant use the phone on Telcel, if i change the GSM mode in *#*#4636#*#*, the phone FCs, but still no signal, what should i do to make it work in Mexico Telcel GSM? I need to make the same procedure like if i want it to work on US carriers or what? thank you.

Sure!
it works!, just follow the process and if you want you don't need to flash your phone with other rom. I got voice for Telcel, Movi and Iusa but not 3G data. I must say that i found something, i can't switch on 07 data call configuration on ##PROGRAM (##7764726) menu. If you need anything please tell me, maybe i can help you.
joel_sinbad said:
Ok, I feel like a n00b with this, but recently i bought a Droid Bionic on ebay, i got it now, but i want to use it for Telcel GSM, when i insert the sim card, i got the message that the sim card is from an unknown source, i never got that message before on another phone, i heard that the ICS update activates the global roaming on the Droid Bionic, but i don't know how to activate it, because of that message i cant use the phone on Telcel, if i change the GSM mode in *#*#4636#*#*, the phone FCs, but still no signal, what should i do to make it work in Mexico Telcel GSM? I need to make the same procedure like if i want it to work on US carriers or what? thank you.
Click to expand...
Click to collapse

[Q] Call ended before dailing starts

I bought a second hand GT-I9305. After the first boot I dicided I wanted to flash it with the CM nichtly. I first rooted the stock rom, flashed a recovery and then flashed CM. Now the problem is the I can't make calls. When I dial a number the phone responds with 'call ended' before it even starts.
I don't know if the phone worked to begin with, the first thing I did is flash it.
I've tried different roms now and reverted back to the 4.3 factory image. None of that fixed the problem. I've also tried putting to 2 or 3G only which didn't help either. My phone still shows an imei number.
I'm completely aware of the fact that I might have done something very stupid. I flashed android devices before but I'm the type of person who reads the manual when it's to late.
Does anyone have a suggestion on how to solve this problem?
I'm usint T-mobile on the EE network in the UK.

Problem still unsolved, more information
I'm giving some more information as the problem isn't solved yet.
I'm on a Pay as You Go sim that works fine in another phone (HTC Desire S). I've now also try to downgrade to 4.1.1 but still no luck. I've also tried different sims but the problem occurs with those sims as well.
The phone looks to be registered to the network, at least that's what it shows. Also, data works, I get a 3G and H+ connection,
I'm more than happy to provide more information. Any help is greatly appreciated.

SIM unlocked? Google xda sim unlock GT-i9305...

Phone not locked
Thanks for your reply. The phone is already unlocked.

IMEI blocked? If you're in UK try www.checkmend.com/uk/ it'll cost you 1.99 but might save you time & effort...

[Q] Voice: Out of service / Data: In service HELP!

I have lurked so much around XDA and still I have no solution
I own a Moto X XT1053 on Movistar (Mexico)
Everything was working fine until I got my SIM card replaced. Now Voice and SMS don't seem to function but Data from my carrier works fine.
When I try to dial I get a "Mobile network not available"
I have done "fastboot oem config carrier (all possible options) No luck.
I have switched from 4G to Edge since that seems to be the solution for many but that didn't work for me.
Yes I have searched for networks and selected "Choose Automatically" No luck.
I have flashed back to stock firmware using T-Mobile's firmware (which has always been my solution and everything worked flawlessly) but now that doesn't work. I've actually not a fan of custom roms I only do stock and xposed the [email protected]#$! out of it but even a clean stock doesn't seem to fix it.
I even went to Movistar and they believe its my phone since they tested my sim on another phone and voice worked on theirs.
Any thoughts on what could be the solution? Please Help!

Check the APNs?

Alecegonce101 said:
Everything was working fine until I got my SIM card replaced....
....they tested my sim on another phone and voice worked on theirs.
Click to expand...
Click to collapse
I think your first statement supersedes your latter statement and everything in between. Just because your new SIM worked properly in another phone doesn't mean it's guaranteed to work in your moto x. Maybe for some reason your moto x is reading the sim as a data only Sim, or maybe it's registering on the network as a data only Sim.
did you cut the Sim to nano or did it come as nano?
Did you try a different SIM in your Moto X?

dtg7 said:
I think your first statement supersedes your latter statement and everything in between. Just because your new SIM worked properly in another phone doesn't mean it's guaranteed to work in your moto x. Maybe for some reason your moto x is reading the sim as a data only Sim, or maybe it's registering on the network as a data only Sim.
did you cut the Sim to nano or did it come as nano?
Did you try a different SIM in your Moto X?
Click to expand...
Click to collapse
They did try another Sim on my phone and same, no good. Voice seemed to work on other phones. I personally believe my phone was blacklisted. When I went to get my Sim changed I forgot to mention the account was under my moms name. Now my new Sim is under my name but with the number of another owner (my mom). Which could explain why I get no voice or SMS but data works fine. I am actually on my way to customer service right now.

Well just returned from customer service. No good. Its the phone itself. :/

Well just returned from customer service. No good. Its the phone itself. :/

Problem solved?
Alecegonce101 said:
Well just returned from customer service. No good. Its the phone itself. :/
Click to expand...
Click to collapse
Have you solved the problem? I'm using Samsung Galaxy S5 and has similar problem... After couple of times of change rom the problem occur... I'm not genius and I have struggle with this problem for more than 2 weeks... See whether we can work this out...
My situation is:
1. Voice: out of service, data: inservice;
2. IMEI: seems normal
3. I tried two SIM card with different ISP, neither work;
4. I also try that two SIM card on my iphone4, both work well.
5. Since my phone is G900F HK version, and I'm currently in UK, so I tried latest UK stock firmware and latest HK stock firmware. Same...
I had do some searching and said that there are few reason that might lead to this problem:
1. IMEI error. Flash rom may damage your partition, if your IMEI is 0046*** or 0000*** something then this is the case;
2. Baseband related. Just flash some wired rom that no capable with your local bands?
3. still looking...
Good luck then...

Same thing
Did you ever solve this? I am having the same problem on my Moto x Pure 2015.

Google Fi, Android Pie, and Invalid SIM

Been experiencing "invalid SIM" error messages on Google Fi after the Pie update. It seems to happen when trying to connect to Sprint. I've tried removing the SIM, reactivating, factory reset. Nothing works.
Anyone else having this problem? It's happening on both my X4 A-1 and my wife's X4 A-1.

Happened to me. Thought I scratched my SIM when adding an sd card to the phone after upgrading to Pie. I contacted Fi and was sent a new SIM which hasn't fixed the issue. Factory reset and reflashing the upgrade didn't do anything.

Same here, my normal use is sprint...startup of sim is configuration of sprit dm... Get sim icon then searching in cell triangle. Signal info App data shows correct sim data for Sprint tower. After twice would access cell site but never got data connection or cell phone even though signal info app would show connected. Then fail, tried to access us cellular but complete sim failure. Removed sim returned to my "daily" Pixel working normally. I guess a push update in the future for us Fi base...have read this happening on first devices that went to Pie way back in August..... Our great android ONE .....

Different waters, same boat
I'm having the exact same issue. Wish I would have waited to take the update.

Same problem here. Restart doesn't help...tried all suggestions on the web using repair codes...only thing left to try is factory reset but have read that doesn't fix it(anybody here tried?).
Sent from my SM-T350 using Tapatalk

Google is aware of this problem and said they're working on a fix.

dgt02 said:
Google is aware of this problem and said they're working on a fix.
Click to expand...
Click to collapse
In troubleshooting I am now getting the same error using my Moto X4 Amazon prime version on 8.1. I was playing around with the various repair codes to understand how they would react compared to my wifes Moto X4 Android One 9.0. I started to get invalid sim error after repairing on Sprint. Now I get the same errors on both 8.1 and 9.0 (invalid sim switching to Sprint). Looks like the problem is a little deeper and more complex than just the Pie upgrade.
At least both still work on Tmobile (the strongest carrier locally). Anxiously awaiting a fix.

A friend at work told me today he saw the invalid sim message and he is a regular Sprint customer so I agree this seems to be a Sprint issue.

It's not just X4A1 models. Regular X4 also. However, my X4A1 was purchased from Google. Quite a disappointing intro to Fi.

I bought 3 Moto X4s for my wife & kids directly from Google Fi. Kids are on Oreo & the wife is on Pie. All 3 phones get the dreaded Invalid SIM error when switching to Sprint. Now, every now and then, I can force connect to an "Unknown Carrier" with Mobile Network Code (MNC) 310-000 (Sprint is 310-120 & T-Mobile is 310-260). When connected to MNC 310-000, I got speeds of up to 74Mbps (I triple checked that wifi was off!). I believe that Sprint is doing network upgrades & for some reason the Moto X4 phones can connect to their test network but not their live network. Anyone else have any insights?

My Fi Moto X4 is Pie same thing. I also have US Cellular in this area and I can if Forced, connect to US Cell but oddly will always revert to T-Mobile. T-Mobile is zero most of the time but will never just try the other two in my coverage area. On Sprint will sim lock, which in the end is which of course locks it up.
I have 2 Pixels (first) Nov, Dec google factory images when were released I found same thing, but a 50-50 to get Sprint to show sprint dm services and complete....registering to specific tower coverage+sim + imei? When working on Sprint would always switch to T-Mobile. Now in the good old days would never go to T-Mobile, Sprint was preferred, then US Cellular, then if found any signal T-Mobile. Jan Images work so far with NO SIM LOCK. I can on my Pixel use a radio.img from Oct 18 and will work like the past on Dec images. So........waiting for "monthly" two months later updates, I guess.

No mobile network connection, no IMEI

Hello,
my Xiaomi Mi 9T Pro running on stock MIUI Global 12.5.1.0 (RFKEUXM) can now suddenly not connect to my mobile carrier.
I hope somebody can help me out.
Some facts and stuff I have tried:
The connectivity icon on the top is just grayed out now and shows an X.
But that was not the case in the morning today.
At that time it showed full bars, but not the usual 4G text and the mobile internet did not work. After some attempts written below it is now just gray.
Mobile internet and cell service do not work.
I have rebooted multiple times.
The IMEI for both SIM slots is shown as 0.
No baseband version is shown.
(I am sure that this was also not the case early in the morning.)
I have never installed a custom ROM on this device, bootloader was never unlocked.
The SIM card is correctly inserted and the phone number is shown in the settings for SIM slot 1.
Trying SIM slot 2 (incl. reboot) did not fix the problem.
The SIM status shows that the service is not available, also on the top left when the phone is locked. ("Dienst nicht verfügbar" in German locale.)
Trying the SIM in another phone works, which I think makes it not a carrier problem.
Trying another SIM in my phone also does not work.
I unfortunately had dropped the phone days before, but no damage visible at all (phone case FTW).
Also it worked without problems, which makes me hope this is not hardware related.
WLAN works, so internet connectivity is possible.
Phone is out of warranty.
I did search for other threads with similar issues, but they all seem to be related to having flashed custom ROMs and then losing the IMEI.
Does somebody have any idea how I can fix this?
Thank you!
Edit: I just remembered/saw that I did do the "Xiaomi Service Framework" system app update to version 6.0.6-G yesterday night, maybe that caused the problem? Currently researching on how to roll that back. If somebody knows, please do tell.

@Philipp said:
Hello,
my Xiaomi Mi 9T Pro running on stock MIUI Global 12.5.1.0 (RFKEUXM) can now suddenly not connect to my mobile carrier.
I hope somebody can help me out.
Some facts and stuff I have tried:
The connectivity icon on the top is just grayed out now and shows an X.
But that was not the case in the morning today.
At that time it showed full bars, but not the usual 4G text and the mobile internet did not work. After some attempts written below it is now just gray.
Mobile internet and cell service do not work.
I have rebooted multiple times.
The IMEI for both SIM slots is shown as 0.
No baseband version is shown.
(I am sure that this was also not the case early in the morning.)
I have never installed a custom ROM on this device, bootloader was never unlocked.
The SIM card is correctly inserted and the phone number is shown in the settings for SIM slot 1.
Trying SIM slot 2 (incl. reboot) did not fix the problem.
The SIM status shows that the service is not available, also on the top left when the phone is locked. ("Dienst nicht verfügbar" in German locale.)
Trying the SIM in another phone works, which I think makes it not a carrier problem.
Trying another SIM in my phone also does not work.
I unfortunately had dropped the phone days before, but no damage visible at all (phone case FTW).
Also it worked without problems, which makes me hope this is not hardware related.
WLAN works, so internet connectivity is possible.
Phone is out of warranty.
I did search for other threads with similar issues, but they all seem to be related to having flashed custom ROMs and then losing the IMEI.
Does somebody have any idea how I can fix this?
Thank you!
Click to expand...
Click to collapse
Did you check Settings, SIM cards and Mobile networks, SIM 1 (if SIM is in Slot 1)
Do you have Turn on? If Turned Off, then do Turn On
If not, ie if it does not recognize the SIM card, then it looks like a hardware issue
Assuming, as you say, that SIM card is ok, correctly inserted, and that phone runs only the stock firmware - hence no root, no custom ROM, no custom Recovery (that user could possibly wipe partitions), etc
Maybe, some connection got loose and later disconnected completely

Thanks for you answer.
I am sure the SIM is inserted correctly and working. It's been in there probably for years now.
Don't know if you saw my update above about "Xiaomi Service Framework". Checking that right now. Maybe I should just do a factory reset.
What I have noticed now a couple of times is that the phone crashes and reboots, just now happened when I connect for USB debugging or before when trying to enter the SIM pin after a reboot, ...

@Philipp said:
Thanks for you answer.
I am sure the SIM is inserted correctly and working. It's been in there probably for years now.
Don't know if you saw my update above about "Xiaomi Service Framework". Checking that right now. Maybe I should just do a factory reset.
What I have noticed now a couple of times is that the phone crashes and reboots, just now happened when I connect for USB debugging or before when trying to enter the SIM pin after a reboot, ...
Click to expand...
Click to collapse
But if the phone does not recognize the SIM card, it would not ask for the SIM pin

zgfg said:
But if the phone does not recognize the SIM card, it would not ask for the SIM pin
Click to expand...
Click to collapse
Agreed, therefore I am sure the SIM is recognized. The phone even shows my number and the SIM has the carrier name.

@Philipp said:
Agreed, therefore I am sure the SIM is recognized. The phone even shows my number and the SIM has the carrier name.
Click to expand...
Click to collapse
If the carrier name is recognized, then IMEI cannot be NULL
Very strange
Try to play with Preferred network type setting
Maybe something really got wrong with the updated Framework

zgfg said:
If the carrier name is recognized, then IMEI cannot be NULL
Click to expand...
Click to collapse
Oh, I though the IMEI is device specific and should be there even without a SIM inserted.

@Philipp said:
Oh, I though the IMEI is device specific and should be there even without a SIM inserted.
Click to expand...
Click to collapse
AFAIK too - but without IMEI it could not attach to the network and therefore cannot show carrier name
Hence strange, and/or the contradictory descriptions/observations

zgfg said:
AFAIK too - but without IMEI it could not attach to the network and therefore cannot show carrier name
Hence strange, and/or the contradictory descriptions/observations
Click to expand...
Click to collapse
Ohh, sry there is a misunderstanding.
The carrier name is only shown as the NAME of the SIM card (I guess it is stored on there or the phone has remembered it). But there is NO connection or carrier name shown in the top notification bar.

@Philipp said:
Ohh, sry there is a misunderstanding.
The carrier name is only shown as the NAME of the SIM card (I guess it is stored on there or the phone has remembered it). But there is NO connection or carrier name shown in the top notification bar.
Click to expand...
Click to collapse
Yeah but you still have unknown IMEI - that's something that should have not happened
Anyway, go to Preferred Network Type and try with Prefer 4G, Prefer 3G or Prefer 2G - maybe, with the updated Framework, something went wrong with the bands support or so
If it wouldn't help, then I'm out of the ideas how to solve

So I did do a hard reset now, and it worked for a short time (IMEI is back), then it doesn't again, and ... just now again. It really is not stable.
Thx. I will post updates when I know more.

Unfortunately the phone keeps crashing and rebooting when using it. It just freezes and restarts, and sometimes it takes a long time to restart (seems like a crash loop).
Twice I also saw some graphic artifacts (bright magenta and green) on a small part of the screen.
I don't think this is just a mobile network connection problem anymore.
BTW: I have installed an older version of Xiaomi Service Framework (also the hard reset reverted it to a much older version), but that did not help.

Hey!!
I hope you doing great
Did you manage to solve the issue?

@Fawad Hussain
Unfortunately I could not solve it, so I am not able to use the device anymore.
Btw, as far as I can see there is no current smartphone without a notch/punch hole which is not gigantic (ASUS Rog Phone 6).

Fawad Hussain said:
Hey!!
I hope you doing great
Did you manage to solve the issue?
Click to expand...
Click to collapse
Same thing happened to me, I have managed to get it thanks to this guy in the video which I don't understand what he is saying but I just followed his steps, so if you are looking for a solution this video is.

But my device is not rooted and bootloader is locked, I tried ways but don't know how to root it or unlock bootloader properly