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Sudden Disconnection from network?

So out of nowhere, my HTC Sensation no longer connects to the network. I would get roughly around 5 mbps around my house, but just all of a sudden, it stopped working. I tried rebooting the phone, and turning on/off airplane mode, and it just doesn't seem to be working. Anyone have any more tips before I try and factory resetting? Also i think I may be experiencing a bug because every time I open any app, I get a very quick glimpse of the weather instead, and then the app opens up. Thanks

What was your previous phone with t-mobile? If you don't have an "android plan" it seems that T-mobile is blocking you from data.
Check this thread: http://forum.xda-developers.com/showthread.php?t=1128335&highlight=data&page=5

I had the same problem two days ago and had to do a factory reset to solve the problem.

Previous phone was MyTouch 3g, so I'm sure I'm on an android plan
Thanks for the link, I'll check it out

Don't assume it's your phone. It's possible that service in your area is down. If you have another t-mobile phone check to see if it has reception. Next go into settings, wireless&networks, and select mobile networks. Then choose network operators and select automatically. If nothing comes up I would call t-mobile because resetting your phone.

[Q] Connection Problems

For the past couple weeks I have been having major connection problems with 3G & WiFi. It would just stop working, even though the bars would be there and show that it is working, but nothing would load. Normally have to turn off Wifi or data for a couple minutes and then turn it back on, or reboot, but even then it does not last that long.
I found on these forums and other places that people seem to have been having the same issue and was caused by the recent update from SuperSU and something it was giving permissions to called mksh. So I denied it permissions, continued to have problem, I went back to the older version, still the saem, I removed the program, and started using just normal Superuser, and the problem still continues.
I was for sure this was the problem, but the program is gone now. I know it can't really be the mksh by itself because it's part of the android OS. For awhile I thought it might have been my SIM card but quickly realised that well WiFi is a problem as well, not just 3G data.
Any one have ideas about this? It's getting really annoying and almost not usable.

BUMP, anyone, this is getting quite annoying. I have searched and done everything possible.

Still needing help.

I don't like bumping this all the time.
I have done all the searching I can, no one has similar problems, no one has any ideas?

Still looking for some answers.
I guess I am the only one.

service issue
toggle airplane mode and if it works call your provider it sounds like a issue with your service

frog1982 said:
toggle airplane mode and if it works call your provider it sounds like a issue with your service
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Click to collapse
What do you mean by toggle Airplane mode, when having the problem, turn it on, then turn it off, to see if service works again?
Yes that works, that is what I do most of the time, actually most of the time I have airplane mode on, and then have only wifi enabled.
Either way, how does troubles with WiFi as well as 3G connections mean a problem with my service provider? They don't provide WiFi

Anyone..

Can't text after rebooting

Every time I reboot my phone, my text messaging stops working (for roughly 3-4 hours). Everything else works fine - I can make and receive phone calls, connect to the internet, etc. I've tried using 3 different SMS apps in case that was the issue, but it doesn't make a difference. I try updating the PRL, updating the profile, even reactivating but still nothing.
I've had the issue on Lollipop and Marshmallow, and this is my second GS6 Edge. Doesn't matter whether I'm connected to wifi or Sprint network. Stock ROM, not rooted. Anyone else ever have an issue like this? I thought maybe I could mess with the settings, but when I go to 'mobile networks' I don't have the option to edit or add Access Points, and Network Operators is grayed out.

baldwin69 said:
Every time I reboot my phone, my text messaging stops working (for roughly 3-4 hours). Everything else works fine - I can make and receive phone calls, connect to the internet, etc. I've tried using 3 different SMS apps in case that was the issue, but it doesn't make a difference. I try updating the PRL, updating the profile, even reactivating but still nothing.
I've had the issue on Lollipop and Marshmallow, and this is my second GS6 Edge. Doesn't matter whether I'm connected to wifi or Sprint network. Stock ROM, not rooted. Anyone else ever have an issue like this? I thought maybe I could mess with the settings, but when I go to 'mobile networks' I don't have the option to edit or add Access Points, and Network Operators is grayed out.
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Click to collapse
Try dialing ##72786# then don't touch the phone. It will do its thing and reboot a couple times

Soooperstar said:
Try dialing ##72786# then don't touch the phone. It will do its thing and reboot a couple times
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Click to collapse
I have tried that multiple times, but no luck. Even tried ultra power saving mode in case one of my apps is impacting my text (however, still the same issue after a factory reset so it shouldn't be an app issue).

LG G5 Sim not detected only for SMS and calls

As stated I'm using the LG G5 H830 T-Mobile variant. I am getting 4G LTE data connection and everything runs well (Not in any WiFi range) Yet for SMS and calling as well as mobile hotspot I get "No USIM card' error. This happened after wiping the system and formatting data. Rebooted recovery (as per instructions on forum) then installed the stock firmware & Patch with systemless root and xposed. After this I did factor reset when just pulling the sim didn't help. Still nothing. I reflashed just the stock firmware with TWRP and SuperSU and issue is still happening. I've disabled rebooted and enabled the phone radio. SIM is in good condition and tray as well everything is SECURE and should be good to go.
I'm assuming a new SIM might be a solution. But I'm not counting on it and with Labor Day tomorrow for me I wouldn't be able to pick one up for 2 days. So here I am...hoping someone might have a fix. I know I don't have many posts on here. But I am an experienced user....just not with the more basic of problems I guess
Thanks!!

Has anyone else experienced this yet? I'm just curious...I had it fixed for a couple days. I've formatted data and done complete system wipe. Tried it resetting phone with the COMPLETE zip and TOT using LGUP. I'm receiving texts. Not calls. Not able to send either. I've activated new sim, didn't help. LG support just told me to look into warranty. T-Mobile needless to say just wanted. Sim card does show stock tmobile short code contacts but phone number shows as unknown. Hotspot won't work. I've tried setting the phone number to the sim. Nothing.
Anyways. I don't think I messed with anything, even so I've done everything to start the phone from scratch. Going to replace it, just more or less curious at this point and maybe others have had the same issue.

I believe I had the same issue as you and it was driving me crazy. I was constantly wiping data, system, etc but my phone kept giving the message "roaming indicator off" where it should show the name of the carrier. This resulted in me having LTE data and that's it- no 3g, no phone calls, etc. I couldn't even access the mobile network menu.
What ended up causing the issue was the network mode setting under wireless networks. Keep in mind at this point I'm running a patched rom which now gives more options in the network mode menu than the phone came factory with. I have an area at work where I have to switch to 3g, GSM/wcdma preferred network setting, because although I have full LTE signal, my connection goes dead. When switching back from 3g I chose the setting lte/CDMA thinking this would force my phone to stay in lte mode due to another area on an upper floor where the phone will constantly drop lte.
Anyways this resulted in my phone saying roaming indicator unavailable, the inability to make or receive phone calls, and either the mobile networks or network mode menus being grayed out. When stuck in this mode there is no way to put the phone back into the standard "GSM/wcdma/lte" mode. Even a complete reflash won't fix it. I even used lgup, which worked for maybe a day until it force closed the phone app and went back to roaming indicator unavail. I wiped every partition and even reflashed radio firmware. Nothing worked.
What ended up fixing it was using an app called v10 hidden settings which allowed me to access the network mode menu directly and re-choose the lte/wcdma/GSM setting. Incidentally on first access to this menu through the app there are only two network settings available. Once you choose a GSM setting, the rest appear.
I'm not sure if this was your issue but I hoped this helped because this took me about a week to workout.

loosing reception/signal on my s8+

Somehow my s8+ loosing reception all the suddenly.
phone has never been dropped.
i am loosing cellular signal all the time. no mattere where i am.
first i thought it was software problem, an did all the right things. safe mode, checking third party apps,
hard reset, an all that.
then i downgraded the room back oreo to see if it helped, no luck ;(
changing sim did NOT help either.
any suggestions? i have no warranty left on the phone as it a bit over 2 years old.

Mine is doing the same thing, even with wifi. It started after the most recent update. I have been googling, but haven't found much so I assumed that it was localized to me. I have never had connectivity issues with this phone before.
Sent from my SM-G955U using Tapatalk

I am having the exact same issue, it all happened after I updated to android 9, even if you downgrade back to 8 it doesn't fix the issue, has anyone managed to find a solution ? Like henbone11 mentioned suggested sites with fixes from Google do not work. Thanks in advance

I was thinking bad modem software? Is it possible to get a older modemsoftware onto the phone with PIE installed?

Same problem here. Have not done any mods, always accepted the official updates.
Cant make or receive calls. (sometimes can make one or two calls right after restart). I do get text message notifications about missed calls. GSM data not working (sometimes seems to work for a bit but not enough to load a page or use maps.
WiFi and Bluetooth still work for me. so I'm using the s8 with another older phone for WiFi hotspot and calling.
Have done full factory reset, uninstalled all apps aso. Nothing brings it back - phone repair shops say they haven't heard s8 having these problems.

I have the same issue.
One day after I restarted my phone, it suddenly said no network connection. I did factory reset too, didnt fix it. Changed sim cards, still error.
I downloaded a widget that was supposed to turn the cell radio on and off. Cant turn the cell radio on either

Network Connection on s8
Mihkel.ee said:
Same problem here. Have not done any mods, always accepted the official updates.
Cant make or receive calls. (sometimes can make one or two calls right after restart). I do get text message notifications about missed calls. GSM data not working (sometimes seems to work for a bit but not enough to load a page or use maps.
WiFi and Bluetooth still work for me. so I'm using the s8 with another older phone for WiFi hotspot and calling.
Have done full factory reset, uninstalled all apps aso. Nothing brings it back - phone repair shops say they haven't heard s8 having these problems.
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Click to collapse
Did you get any luck fixing your s8+ network problem?

no, still no network.
have done everything I can without rooting.
Tried different SIM cards and network providers - no luck.

vargens said:
Somehow my s8+ loosing reception all the suddenly.
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Click to collapse
Hi,
This issue is quite easy to fix. As modem performance (connectivity) is linked to model configuration. Another word for this is CSC.
It is fine to change your CSC. Download a benchmark tool to monitor your connectivity and record values and do not feel afraid to update / change your CSC.
It can take a while to find the right one for you, not it will be worth it. Don't worry.
Note: CSC changer can be easily found in XDA.
Note: a restart may be required to take the configuration into account.
Cheers
Spyrou

Hi there mate!
spyrou007 said:
Hi,
This issue is quite easy to fix. As modem performance (connectivity) is linked to model configuration. Another word for this is CSC.
It is fine to change your CSC. Download a benchmark tool to monitor your connectivity and record values and do not feel afraid to update / change your CSC.
It can take a while to find the right one for you, not it will be worth it. Don't worry.
Note: CSC changer can be easily found in XDA.
Note: a restart may be required to take the configuration into account.
Cheers
Spyrou
Click to expand...
Click to collapse
Hi.. i want to do your solution.
What benchmark tool to use? And is there a tutorial for the process?
Thank you so much for the idea.
I moved to another country and used a local sim card, worked for a couple of days and then it's suddenly no network.
IMEi still ok.
Phone still detects my number.
I've tried
resetting network setting
factory reset
Flashing latest unbranded firmware via Odin
Still no luck.
The mobile radio switch won't turn on.
Ping test fails.
Sometimes I wonder if this is a hardware issue.

spyrou007 said:
Hi,
This issue is quite easy to fix. As modem performance (connectivity) is linked to model configuration. Another word for this is CSC......
Click to expand...
Click to collapse
Why would this work? Phone worked normally before. Same country/same provider. Sometimes still connects to data network for a minute and then drops all cellular connection again.
Why would changing CSC work.
Asking because changing CSC is not easy for me and I don't see why would I need to change it if it worked perfectly before. NFC payments worked(still work) , data/voice calls worked perfectly for 2 years. Then suddenly didn't.