Database Users

[Q] Lose Signal after hanging up

I have an AT&T Atrix that I got unlocked. The only problem I have with it is that everytime that I hang up a phone call, it loses signal for about 25 seconds then the signal bars come back on. Does anyone else have this problem? At first I thought it was the phone, but I tried my friends AT&T sim card and it worked fine. When I use it with T-Mobile, the internet connection is on EDGE, which is fine with me, since the web browsing is actually fast on it. But everytime after I hang up on a phone call, I lose the signal. I really like the phone, but stuck on what to do. I had hard resetted it already, and same thing, it still loses signal after hanging up.

Cellular network (calls and sms) not working

Phone is rooted and unlocked with multirom since July and has been working great. 3 roms installed; liquidsmooth 5.1.1, chroma 5.1.1, and Ubuntu.
Yesterday, calling started to be intermittent. Sometimes switching airplane mode on/off fixed it, sometimes it didn't. Today I cannot get calls to work at all. Phone shows dialing but then hangs up before any ringing. Incoming calls don't work either, it goes straight to voicemail. I thought it may have been lollipop but the problem occurs in Ubuntu as well. Funny thing is that the phone finds the network carrier and has decent signal.
I havent changed anything on the phone recently, only thing is that I dropped it 3 days ago. Thankfully no cosmetic damage, but am starting to think internal damage.
I've tried soft reboot, cold booting, pulling the sim...no luck
Should also mention I'm on virgin mobile canada...
Any ideas?

mouf said:
Phone is rooted and unlocked with multirom since July and has been working great. 3 roms installed; liquidsmooth 5.1.1, chroma 5.1.1, and Ubuntu.
Yesterday, calling started to be intermittent. Sometimes switching airplane mode on/off fixed it, sometimes it didn't. Today I cannot get calls to work at all. Phone shows dialing but then hangs up before any ringing. Incoming calls don't work either, it goes straight to voicemail. I thought it may have been lollipop but the problem occurs in Ubuntu as well. Funny thing is that the phone finds the network carrier and has decent signal.
I havent changed anything on the phone recently, only thing is that I dropped it 3 days ago. Thankfully no cosmetic damage, but am starting to think internal damage.
I've tried soft reboot, cold booting, pulling the sim...no luck
Should also mention I'm on virgin mobile canada...
Any ideas?
Click to expand...
Click to collapse
You could try flashing the radio image via fastboot.

I tried flashing the radio via recovery... No luck either

Data constantly drops and jumps back

Hey guys I've got my N6P International set, with nanosim.
Every once in a while, when I'm surfing the net, facebook etc. my data would just drop from LTE to "No Service" and stays there for 15 or so seconds before jumping back up.
I have tried going back to stock/locked bootloader, tested with another sim card and yet the issue occurs.
Using my sim card on another phone shows no drop in signal.. any advice or if I should RMA my device.
Currently back to 6.0.1 Chroma.
Its getting really frustrating in the last 10 mins to drop over 3 times.

With phone on take SIM card out, then restart the phone. After it reboots, then reinsert the SIM card.

thanks for the tip but it don't really help, still happening.

Have the same issue. Ended up having to RMA my phone. Huawei must have sent me a diffrent phone (used) since the IMEI is diffrent. It worked for couple hours then I got Nougat 7.1.2 update and LTE started droping again . Thought the update caused the issue so I unenrolled from Andorid Beta and rolled back to 7.1.1. but it did not help. Does anyone have a clue what could be the cause?

I do have the same issue for about 2-3 months, but only at work where's pretty bad signal. Data stays on until its used by any app, play store upgrade or yt video buffering for instance. Then it disconnects and search for signal again. Very annoying. At home everything works just fine. That's really really strange.

Losing mobile network

I have a stock t-mobile s7 edge device. It's losing the mobile network. I've noticed it a couple of months ago - it happened a few times but recently the problem is getting worse. It already happened 3 times this week.
Seems like completely random. Sometimes I notice it after I go somewhere with weak signal or no signal at all. Sometimes when I get back to an area with good signal it reconnects and sometimes it doesn't. Sometimes it shows the bars and says it's connected to t-mobile but 4g doesn't show up at all. So you can call but no internet. Sometimes no signal at all.
When it happens the only way to connect is to reboot the phone. Nothing else helps. If you try to connect to network manually - it can find t-mobile but unable to connect. just spins. Changing from lte to 3g or 2g also doesn't work.
I even tried to create a new APN - same thing.
Please heeeeelp...........

Last time this happened to me on another device, it was the sim card that had a problem. Have you tried with another SIM card?

No, but I don't believe it's a sim card related problem. Wife's phone has the same problem although less frequently. But she also travels less.
It looks like a configuration / firmware or maybe hardware issue to me.

I'm experiencing the same issue. It seems to happen when the phone loses signal completely like when deep inside a building. Then it won't reconnect to data or the network by itself.
From the first moment when I got my edge back in April I noticed that the radio performance was weaker than other phones. Then I got the Note 7 and same issue again. Then back to an s7 edge and the problem seems to be worse on this one specially after the latest software update.
Sent from my SM-G935T using XDA-Developers mobile app

My wife (s7) and me (s7 edge), as well as a co-worker (s7) are having this same issue.
Before it was happening occasionally, but after the last update its happening WAY more often.
Wiping cache seems to help with frequency, but still did not eliminate the problem. Hopefully it gets fixed with an update. I'm not sure how much longer I'll be able to put up with it.
Edit: I forgot to add a "simple" fix I've found that works almost all the time is to turn off mobile data, turn on airplane mode, turn off airplane mode, wait for signal, then turn on mobile data. Those steps in that exact order work for me most of the time.

So I've been having the same issues as everyone stated. The only fix is to reboot the phone, but who wants to that every time. I even changed the sim card!! I wish T-Mobile would get out of their feelings and start selling more flagship phones.
I have made the decision to jump to LG V20. I hope this issue doesn't exist with the LG.

I've just got my s7 edge and I'm sort of having same problem at home got 2 bars and sometimes goes to 4 bars but also wen I called someone the line was crackling but person said could her me fine so done a wiped cache and think it's sorted it now for the time being
(Edit ~ it's done it again could hardly hear person I was talking to)
Sent from my SM-G935F using XDA-Developers mobile app

Sometimes I can't receive phone calls

Hi
My problem with S8 is that sometimes it can't receive calls,some of my friends asked me if I shut down my phone during the day ...
I change the SIM card,done a factory reset and I have the same problem...Is anything there to fix this?A friend of mine have the same problem with S8.
My signal is always full 4g,no signal drop at all.

Go into settings>mobile network and change the network mode from global to lte/cdma

Same problem with my phone on T-Mobile. I had the same thing happening with my V20 too.

Same here in Poland S8 a2mobile

That means is a software problem?or not..

Happened to me once. Did a restart and then everything worked fine again.

I think it is a Samsung S8 issue. I am having the same issue. I will now change my phone back to s4 and see. I will update.