Develop Bugs

[Q] Data Connectivity Problem

Hi guys, I need some serious help. I had the original Note and upgraded to the Note 2. My wife got my original Note. The Note 2 is not rooted. I had my new Note 2 for about 4 days, when I notice that my 4G/LTE (I am in Denver) "switches off" and then I don't have a data connection (can't connect to internet etc.), but I still show full towers on the phone and I can make phone calls. When I restart the phone, the connection is restored and I have 4G/LTE. I can also restore my 4G/LTE by switching my phone back and forth between airplane mode.
At times I would be hours without a data connection and then suddenly the connection restores itself (without me restarting the phone). I have compared my connection to my wife's original Note and her phone has constant 4G/LTE, even when I have no connection on my new phone. It is not area specific since I might have no data connection in the morning, but in the afternoon everything is fine (that is now if I don't restart the phone and just leave it be). I took the phone back to Best Buy and exchanged it for a new one and I have the same problem with this phone.
It is driving me crazy since I need my data connection. I've been on the phone with ATT and we've reset the phone and did all that. No luck. They are checking into "other solutions" but I am not hopeful. My questions:
1) What can I do. Anybody else with this problem and how did you fix it.
2) Is this a phone problem or tower / ATT problem (I don't think tower since my wife's Note is working fine)
3) Should I wait for ATT or try and exchange this again for a third time? My 30 days are running out.
Any input will be much appreciated.
Thanks
AB

Execusa said:
Hi guys, I need some serious help. I had the original Note and upgraded to the Note 2. My wife got my original Note. The Note 2 is not rooted. I had my new Note 2 for about 4 days, when I notice that my 4G/LTE (I am in Denver) "switches off" and then I don't have a data connection (can't connect to internet etc.), but I still show full towers on the phone and I can make phone calls. When I restart the phone, the connection is restored and I have 4G/LTE. I can also restore my 4G/LTE by switching my phone back and forth between airplane mode.
At times I would be hours without a data connection and then suddenly the connection restores itself (without me restarting the phone). I have compared my connection to my wife's original Note and her phone has constant 4G/LTE, even when I have no connection on my new phone. It is not area specific since I might have no data connection in the morning, but in the afternoon everything is fine (that is now if I don't restart the phone and just leave it be). I took the phone back to Best Buy and exchanged it for a new one and I have the same problem with this phone.
It is driving me crazy since I need my data connection. I've been on the phone with ATT and we've reset the phone and did all that. No luck. They are checking into "other solutions" but I am not hopeful. My questions:
1) What can I do. Anybody else with this problem and how did you fix it.
2) Is this a phone problem or tower / ATT problem (I don't think tower since my wife's Note is working fine)
3) Should I wait for ATT or try and exchange this again for a third time? My 30 days are running out.
Any input will be much appreciated.
Thanks
AB
Click to expand...
Click to collapse
While it's possible you've received two faulty phones, the more likely culprit is the only thing that hasn't been changed out. The SIM card.

Synner12 said:
While it's possible you've received two faulty phones, the more likely culprit is the only thing that hasn't been changed out. The SIM card.
Click to expand...
Click to collapse
Good idea, I will get the SIM card changed out. Thank you for your input.

Data works, but no voice?

The last couple days, I've had no phone reception (Verizon LTE Galaxy Nexus). Data still works (although it may be a bit spottier, but I'm not sure), but no voice calls will go through or be received. The reception status in the taskbar will show either an empty triangle (when there's no data) or a gray triangle with 3G/4G (when data is connected). There may be one or two gray bars occasionally for a couple seconds, but a call won't go through.
I'm using the most recent JDX ROM, though I've tried rolling forward and back versions. I've tried a couple different sets of radios as well, all to no avail. The battery will drain very quickly as, I believe, the phone searches for a signal. Friends on my plan have full reception from Verizon standing next to me.
The only other odd thing that's happened recently is a week ago I got a message that there was no SIM card connected and that I needed to put in my SIM card back in and reboot. I took the card out, put it back in, and haven't gotten the message again since. Not sure if that's related.
Any thoughts? Thank you!

knicknut said:
The last couple days, I've had no phone reception (Verizon LTE Galaxy Nexus). Data still works (although it may be a bit spottier, but I'm not sure), but no voice calls will go through or be received. The reception status in the taskbar will show either an empty triangle (when there's no data) or a gray triangle with 3G/4G (when data is connected). There may be one or two gray bars occasionally for a couple seconds, but a call won't go through.
I'm using the most recent JDX ROM, though I've tried rolling forward and back versions. I've tried a couple different sets of radios as well, all to no avail. The battery will drain very quickly as, I believe, the phone searches for a signal. Friends on my plan have full reception from Verizon standing next to me.
The only other odd thing that's happened recently is a week ago I got a message that there was no SIM card connected and that I needed to put in my SIM card back in and reboot. I took the card out, put it back in, and haven't gotten the message again since. Not sure if that's related.
Any thoughts? Thank you!
Click to expand...
Click to collapse
Did that fix your problem cause the samething is happening to me now.

G4 H815 doesn't stick to LTE - apn okay, lp&mm stock kdz already flashed

Hello!
I have a big problem with my G4 (H815 version, Germany) beginning with the switch from CM13 to the (stock based) Genisys 3.2 ROM. I've tried to fix it for three days now but without success. It doesn't stick to LTE anymore like it should do and did before. After a reboot it does sometimes connect to LTE but after switching back from wifi or airplane mode it's showing the "no signal" icon. Then it takes some seconds until it reconnects to the mobile network but now just to 2G or 3G. From this point it's not willing to reconnect to LTE, even not through the manual RAT-selection. "Force LTE" using the hidden menu then results in no network connection. However, after restoring my EFS-partition-backup with TWRP (from a time when it was working perfectly) it's connecting to LTE directly after boot but only once and only until you toggle wifi or go offline - like described before. After the next reboot it will mostly connect to 3G and then maybe switch to LTE sometimes or not.
Of course I have checked, deleted and restored my APN multiple times, I have also recovered to a stock V20b and V10d .kdz using LG UP in refurbish mode. Unfortunately even on the fresh and untouched V10d install it shows the same strange behaviour. Restoring the CM13 backup (including EFS partition), which has worked perfectly before, shows the same network bug now.
My sim-card is still working perfectly in my other phones. It still connects and reconnects almost instantly to LTE in my old S4 in places where the G4 did the same but struggles now.
I have even tried the cdmatool which is used to unlock additional LTE bands. I didn't change anything but it does show all usual LTE-bands which are needed for my provider.
Does anyone have an idea what I could try next? I'm living in an area with much better LTE than 3G connection and paying for a quite expensive LTE contract so a working LTE is very important for me. If I don't get that to work again I would need to replace my just over one month old G4 :crying:
Many thanks in advance for your answers
f-rouz

Meanwhile I have also tried another simcard. Still no LTE

i have the exact same problem, well, almost. no unlocked bootloader, but when i first got the phone i root injected the system.img and flashed away, thought everything was fine. now it just doesn't reconnect to 4G. well, at home at least. on my S4 i get 4 out of 5 bars on 4G, with the G4 i get 2 or 3 bars out of 5 on 4G, so the signal isn't great but good enough. i live in hastings (a town) and went to brighton today (a city) where the signal is max 4G, and the device does pick it up. but as soon as i go through a 3G area to home, it doesn't reconnect. have tried flashing original system.img back, upgrading to MM 6.0 after factory reset (via LG bridge), then downgraded again to V10c via LGUP - factory reset before the downgrade, no joy, still the same.
when you say you have forced LTE in hidden menu, did you try this - enter 277634#*# in dialer and go to field test > modem settings > lte band selection and select the band for your operator, which can be found on 'wiki europe lte bands'. there were two bands for my provider (three UK) and band 3 was what i wanted. i can now switch to 4G but it's a pain having to this every time i come home ( i use my phone for home internet via tethering).
worst part is, having refrained from unlocking the bootloader to save the warranty, i phoned LG today to send it back as faulty and explained i could switch it to lte band 3 via the hidden menu and they told me my warranty was now invalid as had OPENED the hidden menu (they told me this after taking my imei). so if anyone reads this and phones LG for a repair, don't tell them you have accessed the hidden menu if you have done what i did.
think i'm just gonna sell the phone, make a palpable loss and buy another one, as i love the phone

Wow, I haven't thought that from LG. I feel like I've searched the whole internet already and nobody has a solution to this problem. I'm about to send my G4 back to Amazon (or sell it otherwise), hope the best and get myself a Oneplus Two because the G4 seems to be too *****y from the development standpoint. I've never had a situation like this with my previous Samsung phones since 2009. I will miss this camera though. And the NFC and the wireless and fast charging capability... the G4 is a nice phone nevertheless...
Edit: And yes, I have tried the "277634#*#" hidden menu, although it isn't accessible through this code on MM any more (you need a terminal command to start this).

Have you tried limiting it to 4G/2G in hidden menu? Mine also have a similar problem in Lollipop in that it is very aggressive in dropping to 3G. That worked for me. Phone doesn't drop to 2G much provided you have decent LTE coverage.
Now I'm on Marshmallow and not rooted, thus cannot do the same. Though it seems to be sticking to LTE a bit better than before.

I have tried that but it doesn't work. As I don't get any network connection wenn forcing LTE only, forcing LTE/2g results in 2g only.

My G4 still doesn't want to connect to LTE so I have ordered a S6 now... As I still have no idea what was causing this I just can't risk that happening again. It has been a short journey for my first LG and me and I really liked my G4 actually... Bye G4 community

you just needed to flash the stock modem, most likely

Unfortunately, it isn't that easy. That was of course the first thing I did (and not just one time)...

Network connection drops and squeeze for assistant stops working

Just checking to see if I am the only one having these issues.
I have the 3 XL on ATT, and I randomly have no internet access over mobile data, even though the notification shows LTE and decent signal strength. Screenshots attached to show what I'm talking about. This has happened about 4 or 5 times since I received the phone a few weeks ago. I went to ATT and got a brand new sim, thinking that my old sim may have been going bad, but that did nothing. Only way to get the mobile network connection working again is to reboot the phone.
I have also noticed a few times that the squeeze for google assistant feature will stop working, and I have to reboot the phone to get it working again. Anyone suggestions? I am leaning towards just doing a factory reset this weekend, but I would like to avoid that if possible.
Thanks

dont know about the edge squeeze assisit not working (i use edge sense module and app) but i have to reboot or go into airplane mode to get data to work when i get the x. maybe using a different apn would help... im on att too

AT&T issues
This is now a problem for me. I have to put my phone in airplane and then back to lte at least once a day in order to get mobile data working again. I'm not really sure if it's a network issue or a phone issue.

Issue for me here too, but I'm in Australia on Telstra network.
Sent from my Pixel 3 XL using Tapatalk

Question Unable to retain/regain signal without reboot/airplane mode toggle

I'm at my wit's end with this. I got this phone last year and it worked perfect until the stock Android 13 update. Then it wouldn't hold a signal to save its own life. I finally have wifi here so it's not as much of an issue, but when I leave my house I have to toggle airplane mode to get it to work again, or it's stuck on "emergency calling only" forever. I did recently put Lineage on it, thinking maybe that would help. The last couple updates it's a little better, it will sometimes get signal back on its own. However more often than not I have to toggle airplane mode or reboot to get service back. This happens all the time, a dozen or more times a day depending on how often I lose service. I did try to search the forums for an answer, but I kept getting errors back with the exception of one result with the same issue that said "tmobile only" under the fix.
I have:
Reset network settings
Reset APN
Manually selected a carrier and switched it back
Cleared cache through Android Settings
disabled/enabled mobile data
Toggled Mobile data always active
Any help would be greatly appreciated. Seriously considering going back to my LG G8 ThinQ and selling this thing, but I love the cameras on it. Side note: When I put the SIM in my old phone none of these problems exist.
Model: LE2125
Carrier: Verizon
Lineage ver.: 20230613

Caboose27 said:
I'm at my wit's end with this. I got this phone last year and it worked perfect until the stock Android 13 update. Then it wouldn't hold a signal to save its own life. I finally have wifi here so it's not as much of an issue, but when I leave my house I have to toggle airplane mode to get it to work again, or it's stuck on "emergency calling only" forever. I did recently put Lineage on it, thinking maybe that would help. The last couple updates it's a little better, it will sometimes get signal back on its own. However more often than not I have to toggle airplane mode or reboot to get service back. This happens all the time, a dozen or more times a day depending on how often I lose service. I did try to search the forums for an answer, but I kept getting errors back with the exception of one result with the same issue that said "tmobile only" under the fix.
I have:
Reset network settings
Reset APN
Manually selected a carrier and switched it back
Cleared cache through Android Settings
disabled/enabled mobile data
Toggled Mobile data always active
Any help would be greatly appreciated. Seriously considering going back to my LG G8 ThinQ and selling this thing, but I love the cameras on it. Side note: When I put the SIM in my old phone none of these problems exist.
Model: LE2125
Carrier: Verizon
Lineage ver.: 20230613
Click to expand...
Click to collapse
Maybe contact Verizon support. They should be able to fix it or at least tell you what the problem is.

TheGhost1951 said:
Maybe contact Verizon support. They should be able to fix it or at least tell you what the problem is.
Click to expand...
Click to collapse
I tried that. I couldn't get anyone that was a technician on the phone and eventually after three days of not getting an answer they closed the ticket.

Caboose27 said:
I tried that. I couldn't get anyone that was a technician on the phone and eventually after three days of not getting an answer they closed the ticket.
Click to expand...
Click to collapse
WOW, glad I am with TMO. Their support is the best I have ever worked with. To me they set the standard.

You said you reset the APN, but did you check to see if the APN is the same as on your other phone that doesn't have any issues with mobile service? Maybe check to see if they are the same, and if not put the APN in that works

Amazoniac said:
You said you reset the APN, but did you check to see if the APN is the same as on your other phone that doesn't have any issues with mobile service? Maybe check to see if they are the same, and if not put the APN in that works
Click to expand...
Click to collapse
That's a good idea, I'll do that tomorrow. Thaanks!

Assuming you're unlocked and rooted since running Lineage, so add this module in Magisk, and maybe also enable mobile data always active in developer settings for now as well.
[TMO] OOS/COS DATA FIX
TO CLARIFY THIS IS A ROOT ONLY FIX After gaining root install given module. Data is now retained. Even after reboot(s). No empty slot or waiting. Issue is TMO variant is showing multi sim. So props were added to make it like a conversion to...
forum.xda-developers.com

Caboose27 said:
I'm at my wit's end with this. I got this phone last year and it worked perfect until the stock Android 13 update. Then it wouldn't hold a signal to save its own life. I finally have wifi here so it's not as much of an issue, but when I leave my house I have to toggle airplane mode to get it to work again, or it's stuck on "emergency calling only" forever. I did recently put Lineage on it, thinking maybe that would help. The last couple updates it's a little better, it will sometimes get signal back on its own. However more often than not I have to toggle airplane mode or reboot to get service back. This happens all the time, a dozen or more times a day depending on how often I lose service. I did try to search the forums for an answer, but I kept getting errors back with the exception of one result with the same issue that said "tmobile only" under the fix.
I have:
Reset network settings
Reset APN
Manually selected a carrier and switched it back
Cleared cache through Android Settings
disabled/enabled mobile data
Toggled Mobile data always active
Any help would be greatly appreciated. Seriously considering going back to my LG G8 ThinQ and selling this thing, but I love the cameras on it. Side note: When I put the SIM in my old phone none of these problems exist.
Model: LE2125
Carrier: Verizon
Lineage ver.: 20230613
Click to expand...
Click to collapse
Exact same issue, unlocked LE2125, TMobile simcard. Didn't have issue on custom ROM, but this is happening on OOS13. Tried everything NSA SA 5g dev settings nothing worked. Living with trying to remember to toggle airplane mode periodically.
Try App "connection stabilizer booster" actually helps w root
Connection Stabilizer Booster - Apps on Google Play
Fix cell and wifi connectivity issues. Improve your mobile internet experience.
play.google.com

Life got in the way and I haven't had a chance to try this yet. Probably this coming weekend.