Develop Bugs

[Q] phone always in roaming

I just bought a used DINC2 with the intentions of using it on Page Plus. I've factory reset the phone and it's running stock Gingerbread 2.3.4. I've noticed that the phone is always showing the roaming indicator. (I currently use an LG VX5500 flip phone on Verizon and it is never in roaming.) So, I've tried dialing *228, option 2 to update the PRL as I've seen mentioned but it's always unsuccessful (it dials but then comes back with a message that it was unsuccessful - probably because the phone isn't currently activated). I'm afraid to activate service on the phone if it has a problem and I can't call Verizon support to help because it's not activated with Verizon. Will activating the phone likely fix the problem? Any suggestions?

So the phone isn't activated but you see the roaming symbol because possibly it's trying to find an active Vetizon signal. Once activated n it knows the signal I'm 94.6% sure it won't be roaming anymore.
Sent from my forgotten by HTC Droid Incredible 2. Kept alivw by great minds at XDA that haven't forget this phone.

I went ahead and activated the phone with Page Plus and roaming is gone now. The phone must have lost it's programming because when I activated it, there was a list of things that got programmed (including the PRL). I activated another phone and it didn't do any of that on activation. Anyway, long story short, activated the phone and roaming is gone!

Sim unlocked, can't use phone on same network

Hi,
I recently went to India and thought it would be cheaper there to get my note 2 unlocked but, the person who tried unlocking my device got mad at me as my phone was rooted. He said, everyone wants to be a developer nowadays and thus it made his job harder. He asked me the model number of my phone as it shows GT-N7105 because I have DN3 v 5.2 installed but it is actually sgh-i317m from Telus in Canada. He gave up and said he was unable to do it. After coming back home, my original sim that I have been using in the same phone, does not work anymore. There is no network. My wife's sim card, which is from another provider, works now though it never did before. I though there could be something wrong with my sim card so I tried it in an old phone and it works perfectly in it. What would you suggest, I should do to try and resolve this problem? I am thinking of erasing everything from my phone and factory resetting it. Eagerly waiting for your expert suggestions!

Just to add: I chose factory reset option from under the settings menu and wiped all my data but it still does not work with my sim. I also, went under the available networks settings, chose the option to search networks and then selected mine (telus) but it say's no service (telus) not available. There is another message in the notification bar, which reads "data roaming: You have lost data connectivity because you left your home network with data roaming turned off". I am not sure if that tells you something related to my problem but I though I should mention that as well.

Calls and texts not working.

Hello everyone,
I'm having a bizarre problem that no one can seem to fix. I have an unlocked AT&T branded Note 10+. I used it on my preferred service, MetroPCS.
A couple of weeks ago it stopped receiving or allowing me to make calls. The signal showed full bars and everything else worked fine. After attempting to fix it and failing I switched providers and went to Verizon.
Bizarrely, my phone will not work on prepaid vzw but did work on a post paid so I signed up. Everything phone related worked. It was however very expensive.
Seeing my phone work on a network made me think my phone wasn't the issue so I went back to my preferred network.
Now the situation is this: With a metro sim inserted I show 4G LTE icon but no bars, instead it's just a circle with a line thru it. In this state I have full data but now calls and texts don't work. When I try to make a call the 4G icon disappears and full signal bars replace the circle with the line.
I tried metro tech support, they are no help at all. So I called Samsung. They informed me that my device is still locked. That can't be true as I've used it on two networks that weren't AT&T. However, rather than writing them off I went back to VZW and had a worker insert his sim into my phone and it worked flawlessly, just reassuring me that my device is unlocked.
This device, other than being unlocked is unmodified and had been used in a 100% stock state. Is there anyone here who can please direct me to a solution for this issue?
Edit: I have tried switching to new metro sim cards. Reset my apns and network settings. I even tried a full factory reset.

kingnarkissos said:
Hello everyone,
I'm having a bizarre problem that no one can seem to fix. I have an unlocked AT&T branded Note 10+. I used it on my preferred service, MetroPCS.
A couple of weeks ago it stopped receiving or allowing me to make calls. The signal showed full bars and everything else worked fine. After attempting to fix it and failing I switched providers and went to Verizon.
Bizarrely, my phone will not work on prepaid vzw but did work on a post paid so I signed up. Everything phone related worked. It was however very expensive.
Seeing my phone work on a network made me think my phone wasn't the issue so I went back to my preferred network.
Now the situation is this: With a metro sim inserted I show 4G LTE icon but no bars, instead it's just a circle with a line thru it. In this state I have full data but now calls and texts don't work. When I try to make a call the 4G icon disappears and full signal bars replace the circle with the line.
I tried metro tech support, they are no help at all. So I called Samsung. They informed me that my device is still locked. That can't be true as I've used it on two networks that weren't AT&T. However, rather than writing them off I went back to VZW and had a worker insert his sim into my phone and it worked flawlessly, just reassuring me that my device is unlocked.
This device, other than being unlocked is unmodified and had been used in a 100% stock state. Is there anyone here who can please direct me to a solution for this issue?
Click to expand...
Click to collapse
You just proved either the SIM or the account is the issue.
Sent from my SM-N976V using Tapatalk

I would agree. I should've included that I have tried 3 new metro sim cards, with the same result.
However, please tell me more about how this could be an account issue? Because that could lead me down a path to a resolution. Thank you

A505U can't access Visible network

I've tried everything, so hopefully someone can shine some light into this issue.
I bought a new (unused but from a 3rd party) Samsung Galaxy A50 (A505U) Verizon branded and unlocked. Got a sim card from Visible and went to get it connected. Nothing. WiFi works, everything works, but no cell service.
Here's what I've done (some multiple times)
- reset everything to include network settings, hard reset, etc
- removing the sim, resetting, putting the sim back in. I always get a notification saying the sim card is removed and it goes away when I put the sim back in, so it is recognizing a sim card is in there
- switched sims with another Visible phone/sim and nothing. Both sims worked on other phone but neither worked on this phone
- tried getting into the hidden menus but none of them worked
- talked to Visible tech support which upgraded the issue to the highest level and concluded it's the phone
- Visible believes it's the APN settings but I cannot edit current APNs nor add new ones (grayed out)
- manually add networks, I can see Visible, TMobile, ATT, and some weird numbers, but when I try to connect to Visible it says cannot register on the network, other networks say the sim is not setup for them
- sometimes I get the icon that shows all bars but they're grayed out, sometimes it shows 3-4 bars lit up, sometimes even shows a 4G icon, but mostly the grayed out bars
- sent the phone to Samsung, they tested it and found no faults, guess the hardware is good, ruled that out.
- got into dev options but I'm aware the OEM unlock is not on option on the A505U, not sure if I can change anything else.
I'm out of options. Any other ideas? I think if I can either get into the hidden menus I'll be able to diagnose it better, or if I can somehow change the APN settings I'll be able to set it up. Visible tech support thinks it's the APN, which makes sense to me, but I can't change them.
Any help is greatly appreciated.

I was able to get into the CSC change function, there's not many there, but would changing the CSC help? If so, which should I go to?

I've had a similar issue. Was working fine until the Android 10 update arrived. Since then, it won't work with my total wireless sim card. Tried 3 different sim cards on it, but nothing. Can't add it do anything with the APN, and getting into the phone info hidden menu doesn't help any. I suspect it's a bug in the new firmware or something like that. Works fine with a Verizon SIM though.
Update: Verizon SIM no longer connects to phone. Still works with LTE data. It seems that the CDMA radio quit working with the update to Android 10. Must have been collecting to the Verizon network with VoLTE until it updated the provisioning or something.

So, I finally figured out a workaround for mine that was able to get both data and voice networks to connect while using total wireless, which is an MVNO on the Verizon network. I pretty much narrowed it down to being an issue with the modem not working with CDMA. What I did was download the last Android 9 firmware and flashed just the modem (file starts with CP_) using Odin. After that, I rebooted it and voila! It connected.

Just thought i would give my experience as i just delt with this. i got my 10 update this morning nd let it update and apon a reboot i lost all mobile connection, a signal bar would show for a few seconds looking like it was trying to lock in a signal and it would go back to the ⌀ symbol. i tried flashing the android 9 modem from 2 different updates and neither fixed it. i just decided to order a new phone as i feel its time anyways. my next attempt will be to flash android 9 back using odin then just throw this phone up on craigslist
edit: odin successfully flashed back to android 9 and signal now works again. so if anyone has this issue you can try the method above of just flashing the modem and if that doesnt work you can go back to 9 and restore functionality of verizon mvno's

darkmage1991 said:
Just thought i would give my experience as i just delt with this. i got my 10 update this morning nd let it update and apon a reboot i lost all mobile connection, a signal bar would show for a few seconds looking like it was trying to lock in a signal and it would go back to the ⌀ symbol.
Click to expand...
Click to collapse
Out of curiosity, which carrier are you using?

TJay99 said:
Out of curiosity, which carrier are you using?
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Click to collapse
Visible

samsung a50 not connecting to VZW towers (red pocket)
My phone is doing the exact same thing and while I can appreciate how you resolved the issue it doesn't make much sense to me.
I use Red Pocket for my network. (Which uses Verizon towers - I use the CDMA Sim)
Before this major update to 10 my phone worked flawlessly. Now it won't connect to the network much like you guys have stated in this thread. Mine will connect intermittently for like 3 or 4 min tops and then get kicked off the tower and will actually not show any bars (Circle with a line through it) to show no service for about 10 or so minutes then restart the whole process.
I also have a work phone (2nd phone) that is directly tied to the verizon towers on the verizon network. If I take the sim out of that phone and put it in my samsung a50 the samsung a50 is happy and can make phone calls, send texts, and stays on the vzw towers with no disconnects.
If I take my red pocket sim card and place it in my work phone that phone also works just fine - send messages, make phone calls, and stays on the vzw towers with no disconnects. (work phone = iphoneXR - it's free, sue me)
Even though reverting the modem obviously fixes your issue I do not think that is the actual problem. It also doesn't seem that a third party carrier is being randomly booted off the towers, it seems to be a glitch with third party carriers using third party sims utilizing this new android 10 software that VZW towers do not like.
Which obviously points to an issue with Samsung's latest software not being compatible with third party carriers.
I can't seem to contact Samsung in a direct manner to resolve this issue as they want me to take it to a third party store to have it looked at. I spent 2 and half hours with tech support from red pocket and they came to the conclusion that VZW was doing "upgrades/maintenance" to their towers in my area. (whatever that means.
Any ideas on how I can contact Samsung directly to detail this issue to them? I really do not want to have to root my phone in order to use odin to set my modem back to version 9 as I'm hearing that doing so voids all kinds of implied warranties with the phone and it's only 6 months old.
Appreciate any help that you guys might be able to steer me towards.
Thanks.

Before this major update to 10 my phone worked flawlessly- They Told you the answer, Odin # 9 or if its under warranty take it back Good luck.

My phone (SM-A505U) wasn't even working on visible before android 10.

See my post at the end of this thread: https://forum.xda-developers.com/ga...official-firmware-t3955727/page2#post83845605

I have that problem too. Where I can download v9. I got the Odin.

LG G8 Amazon edition on Sprint, can't make/receive phone calls/texts, but HAVE Data

Got the LG G8 unlocked Amazon Alexa edition last August (2019). I use it with Sprint. I love the phone and it worked great, until a month ago.
All of a sudden, I can't make or receive phone calls or text messages, but I DO still connect to the Sprint cell service (I have bars) and I DO have working 4G LTE Data. Literally, one day it worked and the next day it didn't. I hadn't powered cycled the phone or anything between it worked and when it suddenly didn't. It just stopped working.
When I try to call out, the dialer gives me an "Out of service area" message, even though I'm within my service area. When someone tries to call me, it goes straight to voice mail as if my phone is turned off, except that my phone is turned on. When I try to send a text, it sits at "sending" indefinitely and never sends. When someone sends me a text, I simply never receive it.
Sprint, I do firmly believe, has done everything they can to troubleshoot it and proven it's not a network issue. Several different kinds of resets, including a factory reset. I was able to reactivate an older LG V20 on my account and it works just fine.
The phone is still under warranty with LG, and I was able to send it in for repair at no cost, but they did not find anything wrong with the hardware. They did do a software update of some sort, but that did not resolve the issue.
So now I'm essentially stuck between both Sprint and LG saying it's the other's issue. First unlocked phone I've ever bought and it bites me in the butt.
Any other ideas for troubleshooting either on the phone itself (beyond all the standard stuff which I've already done; I mean, if a Factory Reset doesn't help...), or with Sprint?
Thank you!

I had the same problem with Amazon variant. I used an app called Hidden Settings Muiu and went to "Phone Info" then switch the Preferred Network Type to LTE only leave it on there until it says LTE on data and no network on Voice then switch to LTE/CDMA and it get 1xRTT. Ive tried tweaking settings and everythingelse but no luck that seems to be 100% effective but anytime you **** with your network or restart you'll have to do that.
Edit: Do Global(PRL) then LTE only then to LTE/CDMA. Otherwise itll stay on EvDo for data not LTE.

Cinomed541 said:
I had the same problem with Amazon variant. I used an app called Hidden Settings Muiu and went to "Phone Info" then switch the Preferred Network Type to LTE only leave it on there until it says LTE on data and no network on Voice then switch to LTE/CDMA and it get 1xRTT. Ive tried tweaking settings and everythingelse but no luck that seems to be 100% effective but anytime you **** with your network or restart you'll have to do that.
Edit: Do Global(PRL) then LTE only then to LTE/CDMA. Otherwise itll stay on EvDo for data not LTE.
Click to expand...
Click to collapse
##3282#, apn settings, view, 3 buttons top right, reset to default. Works for most people, may or may not work for you

antintin said:
##3282#, apn settings, view, 3 buttons top right, reset to default. Works for most people, may or may not work for you
Click to expand...
Click to collapse
Did try that and gives me data but no cell service. Thank you though

Had same problem from a newbie...
I used ##873283# with dial key pad. It took a few times but finally worked. As soon as you power off or restart your phone, your back to where you started.
I bought mine from bestbuy 1 1/2 yrs ago. They are having lg send me a new one...
Lg v8 thinq This is the model I had* LM-G820QM.
Good luck.
Had my settings on LTE/cdma with roaming turned off.