Develop Bugs

N7100 keeps dropping network - tried multiple carriers. Faulty?

I've had my N7100 for 2 months now and ever since I received it the network will be showing full bars one minute, then completely disconnect the next (the little circle with a stroke through it symbol). It will remain disconnected until I restart the phone, at which point it will reconnect again.
This is an intermittent problem, which occurs on average about 10 time a day. Sometimes it will keep disconnect after only 5 or 10 minutes.
I have tried different sim cards, from different service providers - all have the same problem. When I put the same sim card in a different phone - no problem. So I've definitely isolated the problem to the N7100.
I've tried factory resetting the phone but this hasn't helped.
Is there anything else I should try or does this sound like a fault for which Samsung should send me a replacement device?

Which model are u using? I had the same problem when I just bought the phone.
I realized my phone which is the Lte model was searching for 4g network at times when the reception is poor and toggled to search for 4g network which caused the phone to cut the network because my phone plan only supports 3g.
Maybe try going to mobile network and select WDCMA mode only. See if helps. Otherwise its problem hardware problem
Sent from my GT-N7105 using xda premium

Mine is the N7100 - 3G only (not LTE) model.
Tried that, and it hasn't helped.
Has anyone else been having this kind of problem?

Did you find a solution to this problem. I am experiencing the same issue.
Sent from my GT-N7100 using xda app-developers app

Losing Data Connection on Idle

Hi all,
Im on Viper Rom 6.2.1 Rom, Elite Lunar Kernel, and latest OTA radio.
My 4G connection is great when connected, I hit the 40s and 50s download speed.
The problem im having is that when the data connection is idle for like 30 seconds, all of a sudden I lose data connection. the 4G LTE logo is still showing but the download/upload activity arrows no longer flashes. It goes back when I turn mobile data off then on again. Then I lose connection again when idle.
What could be the problem?
Thanks

android06 said:
Hi all,
Im on Viper Rom 6.2.1 Rom, Elite Lunar Kernel, and latest OTA radio.
My 4G connection is great when connected, I hit the 40s and 50s download speed.
The problem im having is that when the data connection is idle for like 30 seconds, all of a sudden I lose data connection. the 4G LTE logo is still showing but the download/upload activity arrows no longer flashes. It goes back when I turn mobile data off then on again. Then I lose connection again when idle.
What could be the problem?
Thanks
Click to expand...
Click to collapse
I just had a similar problem recently like this. Turns out i burned out my 4g sim card. Before changing roms or firmware i would suggest going into a VZW store and get a new one. They are free, they dont even look at the phone. Just tell them LTE connectivity isn't working correctly and that the sim card is bad. they will give you another one.

synisterwolf said:
I just had a similar problem recently like this. Turns out i burned out my 4g sim card. Before changing roms or firmware i would suggest going into a VZW store and get a new one. They are free, they dont even look at the phone. Just tell them LTE connectivity isn't working correctly and that the sim card is bad. they will give you another one.
Click to expand...
Click to collapse
Thanks. I figure it was probably the sim card. I will try that.

I am having a similar situation. I have data loss after having hotspot on for a little while and any type of reboot is the only remedy (restart of shell, full reboot, adb reboot, etc). I already swapped Sims at the Verizon store, tried different roms, tried flashing different firmware and radio combinations. Any suggestions?
Sent from my HTC6500LVW using XDA Free mobile app

Uzephi said:
I am having a similar situation. I have data loss after having hotspot on for a little while and any type of reboot is the only remedy (restart of shell, full reboot, adb reboot, etc). I already swapped Sims at the Verizon store, tried different roms, tried flashing different firmware and radio combinations. Any suggestions?
Sent from my HTC6500LVW using XDA Free mobile app
Click to expand...
Click to collapse
I too am having similar issues, though it appears more random than associated with using hotspot.
Every few hours, all radio connectivity but Wifi shuts off. I get the no service icon in the status bar. Only a reboot fixes the issue.
Running teamEcliptic Rom 4.4.3 v1.4, kernel: EliteLunar 3.4.10, baseband: 1.13.41.0421, build: 6.06.401.1.
Soff, unlocked, root, etc.
When I have time to spare plan to restore a stock rom (keeping S-off though) to see if that fixes the issue.
Any advice from those more versed in the One M7 would be appreciated!

[Q] bad mobile data

I'm having this connection issues where the phone would show the 3g/4g icon but the connection is really slow( slowest speedtest gave me was 0.01mbps). Im testing with a different provider now but is it possible this is a hardware fault?

Same Problem
I have a similar problem, when I enable Mobile Data, it could not connect, I have to turn Airplane mode ON and then OFF and then Mobile date On to get the Mobile Data... Very Irritating... I hope its SW issue

I have slower connection on 3g and h then previous devices

Well its only 4g giving troubles now, is 4g and 3g on one chip or a seperate chip?

Try cleaning cache of your browser

Don't think its browser related because its systemwide. Plus i tries a factory reset already

I've gotten this as well from time to time. Doesn't seem related to whether or not I'm transitioning from Wi-Fi to 4g or not.
Sent from my LG-D850 using XDA Free mobile app

pre10c said:
I'm having this connection issues where the phone would show the 3g/4g icon but the connection is really slow( slowest speedtest gave me was 0.01mbps). Im testing with a different provider now but is it possible this is a hardware fault?
Click to expand...
Click to collapse
I'm getting the same and came on here specifically to see whether it was just me.
These are the symptoms: it seems to happen when I transition from a WiFi network to mobile data network. The data icon still shows activity and good signal but internet access is incredibly slow or non-existent in all apps. Toggling in and out of Aeroplane mode fixes it. I am on a 3G SIM, so for now I have tried to turn of 4G mode and see if this fixes it. Will report back.
This is really annoying - my £100 Acer Liquid Metal did this like 3 years ago... I don't expect a modern £500 phone to have this issue.
I love the phone but issues like this aren't acceptable and I'm getting really frustrated to the extent I might even send it back for refund under not fit for purpose.

Also I have problems with unstable network. Has anyone tried to restore the firmware?

mowmo said:
Also I have problems with unstable network. Has anyone tried to restore the firmware?
Click to expand...
Click to collapse
I've turned off 4G as I don't have a 4G SIM, so I'm gonna see if this helps resolve the issue. If not, then I'm going to try and flash a different firmware as my handset came with a EUR firmware and there seems to be some differences between this and the UK firmwares. If that doesn't fix it, I'm going to try the AUS firmware which is a later version.
If I get an success or otherwise I'll post back.

I'm noticing that HTTPS traffic always seems to work fine, but standard non-encrypted traffic doesn't. Anyone else? Seems a bit weird.

Network broke when LTE selected and Wifi on...... EFS??

Hi
As in title i seem to have a lot of time when my network drops and i have the spinny icon. It seems to be when wifi is connected and network mode is the top one that inlcudes LTE. This all seems to have happened maybe since flashing Fulmics, not sure if that's a coincidence though..
Could my EFS be corrupt? is there Any way to check? My IMEI number is still showing. I've flashed back to stock LG rom using TOT method.
Unfortunately i don't have a back up of EFS, as I only have learnt about needing that because if this problem.
Is it new phone time?
Cheers all
MMM

Anyone else experience this? Any advice?
Cheers

lg g3 network issue
Mistermoleymole said:
Anyone else experience this? Any advice?
Cheers
Click to expand...
Click to collapse
does 2g and g3 network works? or ur facing issue with only 4g network

kp263 said:
does 2g and g3 network works? or ur facing issue with only 4g network
Click to expand...
Click to collapse
Everything works, Its just that I seem to lose network connection when I connect to wifi whilst the phone is in 2g/3g/4g/auto mode. I just get "emergency calls only". If I disconnect from WIFI and restart the network, it tends to come back. If I am in 2g/3g mode, and I'm connected to wifi, everything is fine.

Anyone else experienced this issue?
Sent from my LG-D855 using Tapatalk

Anyone? Any advice? Do I need to throw my phone away?
Sent from my LG-D855 using Tapatalk

HTC One M9 - GSM Network Issue

Hello guys!
My HTC One M9 is giving me some headaches!
What is happening is that if I'm inside home, I cannot get GSM network. This happens for both voice and data.
As soon as I go outside, I get the 4G working like a charm. I could live with this, but sometimes I need to sleep inside home
From my troubleshooting around this, I found out that if I reset the phone, there is no change.
Reset network settings does nothing.
Sometimes if I restart the phone I get network, but it goes away quickly.
No change if I enable and disable the flight mode.
What does work is if I set the network mode to be 2G only, then I have the network and all works (except the data with some low speeds).
The phone is now with the build 4.28.401.3
I've tried different RUUs and it is the same thing.
Can someone help to try to understand what can be the cause for this?

.... could it be a network issue?

computerslayer said:
.... could it be a network issue?
Click to expand...
Click to collapse
Of the phone, yes.
I've tried the SIM card on another phone and it works really great! I've tried a different SIM card on this phone and it is the same thing. Loss of connectivity.

kulyboy said:
Of the phone, yes.
I've tried the SIM card on another phone and it works really great! I've tried a different SIM card on this phone and it is the same thing. Loss of connectivity.
Click to expand...
Click to collapse
Yes, I have noticed a similar issue and it has been very annoying. I know that in my area, I can get 4g+, but it only picks it up sometimes and goes away. Also, I have very strong 4g signal around my area but for some reason, it always uses 2g and sometimes gives my 4g, but rarely. I think it has something to do with the way sense automatically switches between networks.
Try typing in *#*#4636#*#*, press phone information and where it says some thing like lte/wcdma auto and select what you prefer. I chose lte/wcdma and now I only get 4g and 3g signals which is acceptable. If you want GSM or something, choose it as preferred. Play around with the different ones and see which is best for you.
If not, try a non sense rom, I don't know if that would help but give it a go.
Hope this helps,
Jev

Well, I've tried different settings, but it does the same. Only when using 2G or GSM only it works inside home.
I am yet to test with a non-sense ROM. Because for me, having an HTC is also because I like sense.
Either way, it seems to me that it can be hardware and not software.
Do someone knows what controls this network settings? A different board? A chip?

You mention applying the Nougat RUU for your phone - did you first update to Nougat via OTA?

The update was made via OTA. A regular update but this was already happening before the update.

kulyboy said:
The update was made via OTA. A regular update but this was already happening before the update.
Click to expand...
Click to collapse
:-/ Darn. Good on you for updating correctly, for sure, but that eliminates the problem I was anticipating.

Could be a carrier issue. If the other phone that has a good signal is an m9 then obviously your phone has a fault. If it was a different model and/or brand then you should learn something about "industry standards" as far as signal detection and interpretation goes. Just because one certain type/model/brand of phone has a good signal it doesn't mean another "has to".
Beamed in by telepathy.