Losing mobile network, strange problem - Xperia Z3 Compact Q&A, Help & Troubleshooting

I bought a 2nd hand Z3 Compact recently and it seemed to work fine. But I noticed after a day or two that it was dropping the mobile network. When it happens I get only ”Only emergency calls” and no bars for signal in the status field.
I've noticed the net disappears after I've made a call or two (rarely can do 2 calls in a row). As soon as I hang up, the net drops.
If I restart it might work again, or if I shut down the phone and start it after a while, also sometimes when removing SIM card and putting it back in again.
I can send SMS/texts and surf as long as I don't call or recieve calls, then the net is gone as soon as I hang up.
Anyone knows why this problem occurs?
Software problem? I have done a factory reset but it's still the same.
Would anything change if I downgrade and root?
Hardware problem?
How do I go about to troubleshoot this, both software and hardware?
It's a D5803, 23.5.A.1.291, Android 6.0.1
The SIM card is new, I have tried it in an older phone with a SIM adapter and it works. Though the older phone uses only 3G.
Grateful for answers!

Related

Phone not working, but showing that i have a signal

My first full day using the phone. Hadnt had an issue until this evening. For some reason i can not make a call. Im in an area that only gets edge, but it shows i have three bars. When i try to make a call it never rings or says connected, it simply ended after about 7 seconds or so. I can however browse the internet or watch my slingbox on the phone so it seems my connection is good. I tried a hard reset, but issue remains. If i try to make a call it will go through maybe once out of every 20 attempts.
I saw a few similar threads, but nothing like this. Anyone have any thoughts?
apparently there is a huge outage in the NYC metro area with cingular. So, thankfully its not the phone. way to go cingular!
im having a similar problem on fido in Vancouver, tho i dont think its as bad as yours. intermittent phone use at best.
I am having the same problem as well. It just says dialing but no tone. I remove the battery and it works again. But a day later and then it starts to act up again.
I was advised to update my sim card since its 3 years old now.
I am with Fido in Montreal Quebec Canada.

"Call ended" right after dialing

First of all, I want to say that I found people with the same issue using Android everywhere and with a lot of different phones, so it's probably an Android bug rather then Moto X itself, but I wanted to leave my report.
I came from an S3, which suffered from the same problem when using Cyanogenmod. When using official Samsung ROM everything worked as it should. Now, I'm getting the same issue on my brand new Moto X.
When I try to call someone, sometimes it just doesn't call, after I press the dial button, it just hangs (without ringing) and finished the call with a "Cal ended" message. It happens randomly, and sometimes I can't call anybody for like 2/3 hours.
The simcard has been changed from the S3 (micro) to the Moto X (nano), so it's probably not it. Also, with the Samsung ROM it didn't happen.
I can still receive calls and messages, and the signal strength is fine most of the time. I just can't call.
Today I faced this problem and then I tried calling from my girlfriend smartphone (samsung ace IIx) at the same time, which is from the same carrier, calling to the same number, and it just worked fine. Mine still didn't work though.
Here is a thread on people on xda facing the same problem, but with a different phone: http://forum.xda-developers.com/showthread.php?t=2351227
Don't know what to do.
i've had the call not go through as you've described, but have never had a phone not let me place "any call" afterwards. i always chalked it up to poor performance (limited RAM, too many processes, etc). My DROID3 would do it and often times when it finally did make a call, there was zero sound and I would have to reboot the phone.
640k said:
i've had the call not go through as you've described, but have never had a phone not let me place "any call" afterwards. i always chalked it up to poor performance (limited RAM, too many processes, etc). My DROID3 would do it and often times when it finally did make a call, there was zero sound and I would have to reboot the phone.
Click to expand...
Click to collapse
Hmm, it doesn't seems like poor performance. I ended up every task and it still happened.
However, I noticed that when I check the "2G ONLY" option it comes back to work. Maybe it's something with the HSPA/HSPA+ connection.
it could be completely carrier dependent then. my experience has been with vzw.
Moto X "Call Ended"
I have experienced this same problem in Houston on the T-Mobile network after switching over to Android. My T-Mobile rep told me they have had towers vandalized for copper which has impacted service for them, I believe he said it was about 15 towers and 10K a pop to get things corrected. What gets me is I was on a Bold 9900 and while I had signal problems in the affected areas of town I didn't not experience the "call ended" issue. I can also call other T-Mobile phones from those same areas but not land lines so to me this seems like a possible network routing issue which I have seen before between specific carriers.
If the problem does continue I may have to switch carriers. T-Mobiles service was previously outstanding in Houston but recently had not been great after the 4G LTE upgrades. I support multiple hospitals and need service to work correctly and will work with the T-Mobile Engineers to see if I can make headway on that front. I noticed another MotoX user reporting he only had the issue when flying in to Houston for work and that everything worked for him outside of Houston. His solution was to operate in 2G mode which for me is really not an option. I have to handle a lot of tasks over the network while on calls.
Anyways I would appreciate it if others could post if they are experiencing these issues and give as many details as possible so we can try to isolate the root cause of this problem and if found to be a carrier issue we can escalate with them. Thanks
dicarli said:
First of all, I want to say that I found people with the same issue using Android everywhere and with a lot of different phones, so it's probably an Android bug rather then Moto X itself, but I wanted to leave my report.
I came from an S3, which suffered from the same problem when using Cyanogenmod. When using official Samsung ROM everything worked as it should. Now, I'm getting the same issue on my brand new Moto X.
When I try to call someone, sometimes it just doesn't call, after I press the dial button, it just hangs (without ringing) and finished the call with a "Cal ended" message. It happens randomly, and sometimes I can't call anybody for like 2/3 hours.
The simcard has been changed from the S3 (micro) to the Moto X (nano), so it's probably not it. Also, with the Samsung ROM it didn't happen.
I can still receive calls and messages, and the signal strength is fine most of the time. I just can't call.
Today I faced this problem and then I tried calling from my girlfriend smartphone (samsung ace IIx) at the same time, which is from the same carrier, calling to the same number, and it just worked fine. Mine still didn't work though.
Here is a thread on people on xda facing the same problem, but with a different phone: http://forum.xda-developers.com/showthread.php?t=2351227
Don't know what to do.
Click to expand...
Click to collapse
Call Ended Issue Resolved
Hi All,
I see this Call Ended Issue in many brands. So I assume the error is a combination of the Network along with the SimSlot.
I tried various combinations for my Moto-E mobile.
Before i post the solution i found, Let me provide a brief about the problem.
I use Vodafone network on sim1 slot and Uninor network on Sim2 slot. I started facing the call ended issue on my sim 1 vodafone network.
I inter changed the sim's and found the network working absolutely fine. This makes me to understand that the sim1 slot with the vodafone carrier has some network issue where that IMEI code has some problem.
i tried to place the vodafone sim again on the sim 1 slot and found the problem persists. So i came to that conclusion.
Hope this might help you and provide a instantaneous and temporary resolution.
Thanks,
Praveen.
Call Ended problem still going...
Hey,
I just rooted my Moto X (XT 1053), like 5 min ago, in the hope to fix this same problem. I`m no programer/developer and have nothing against rooting, I just don`t think I`m that kind of user. Anyway, about a week ago my phone started to drop my calls right after dialing. I restored factory settings, updated it and nothing worked. I took it for service and they offered to charge me 150 bucks to restore factory settings and update the software. So I was kinda forced to root and try to fix it this way. The problem is that I probably don`t understand half of what you guys say, so if there are any kind souls out there, please help me out.
To sum it up:
- No Sim Card error
- I get carrier services and can use mobile internet (3G because 4G is still too explensive here in Brazil)
- Directly drops my calls
- Won't receive calls
- Won't send or receive text messages via carrier (just over 3G or wifi)
I`ve tried another carrier's Sim Card, no go.
I`ve tried my Sim Card on another phone and it worked just dandy, so I really don`t think it`s carrier related.
I`m running Android 4.4.3, as the other updates weren`t available for my phone via Motorola. I thought maybe updating to a newer version of Android might do the trick. I just have no clue on how to do that on a rooted phone... or on a non rooted phone for that matter.
Can anyone give me any tips/pointers/etc... ?
Thanks!
I have the same issue with my moto x on Verizon. Have you been able to figure it out?

Nor recovering from lost signal

Hi All
I got my Xperia XP for about a month and noticed my phone sometimes does not recover (restore) from lost signal. Further details:
1) Usually happens after bluetooth device connection
2) I did replace a new SIM card but same
3) SIM1 is set to be my default SIM card. When it happens, SIM1 shows no signal but never restores (I once tried to wait for 30mins and took the phone for different locations and still never restores). At that time SIM2 appears to have normal signal, but when I make call from SIM2, SIM2 signal drops to zero immediately and fails to make call.
4) Quick solution is to turn on/off the plane mode or restart
I believe this is a bug and wonder if anyone here has experienced the same?
Thanks - this is very annoying as I will miss important calls while I thought the phone was working.
Ken
Just want to tell you I got the same issue. wanna know from anyone who got the same issue please speak out!!!!!!
Have no this issue. But I've full flashed with all wipes via flashtool.
Desperanto86 said:
Have no this issue. But I've full flashed with all wipes via flashtool.
Click to expand...
Click to collapse
Hi Thanks for the advice. I tried but the condition remains.

'Emergency calls only' signal drop outs on recently updated phone to EVA- L09C40B364

Hello,
My P9 (which was bought from O2 UK that I use on GiffGaff) recently received the Nougat update. Before this update my phone worked absolutely fine with no issues with either wifi or mobile signal. Since this update however, my wifi signal is significantly weaker than it was before, but more annoyingly, my phone is CONSTANTLY dropping signal.
I cannot say how often this drop out occurs, as sometimes there will be only a minute or so between drops, and at others much longer. The drop outs themselves can last from as little as 5 seconds to 30+ seconds.
Before we go on, my girlfriend has a P9 Lite (also from O2 running on Giffgaff) which has not been updated yet and she experiences none of the same issues that I do. Her phone will be at full signal whilst my phone next to hers will be on 'Emergency Calls Only'. Again, I never had these issues prior to this update (I believe I updated the phone on Thursday or Friday night).
Additionally I am having loads of issues with notifications which no longer seem to appear, my main concern however is the signal issues.
What can I do?
Thanks,
Sammy.
After this update I'd a lot of problems of connectivity until I realized that my phone wasn't able to read its own IMEI number. Check it on settings->about your phone
I followed some of the tutorials about installing Nougat with no problems and I got to fix it.
dbesoli said:
After this update I'd a lot of problems of connectivity until I realized that my phone wasn't able to read its own IMEI number. Check it on settings->about your phone
I followed some of the tutorials about installing Nougat with no problems and I got to fix it.
Click to expand...
Click to collapse
Thanks, I checked and it appears my phone has no issues with reading the IMEI number, so that doesn't seem to the be the problem.
What exactly did you do to resolve your connectivity issues?
Thanks

Question S21 Ultra sometimes doesn't show that someone is calling me

Hello,
For many months I have had a strange problem with my S21 Ultra, namely it does not seem to show me at random times that someone is calling me, no matter if via the cellular network or some communicators, it simply does not show notifications that someone is calling no matter how is calling. I often have it that only when I pick up the phone, unlock it and check something on it, suddenly messages come that someone tried to communicate with me, and only from then on I can answer calls until I hang up the phone and in an hour or two the same problem - over and over again. I have such an impression as if the phone itself went into some hibernation after putting away, although I have no indications that something like this is happening, because everything looks normal. The phone has the latest update, and I have restarted it several times with no effect.
I would like to add that this happens both in an apartment where I have wifi turned on (I do not use lte calls), and when I am outside while walking in the city.
Is there something I can do to fix this?
This is a very strange issue indeed. Have you checked if your phone has cell coverage when the screen is off? Did you try calling yourself from another phone and number? If the answer is negative to either question, I would suggest resetting your network settings. If that fails, try a factory reset which should solve any issues. If the issue still persists, it could be hardware related and you might need to take the phone to Samsung centre to get it checked.
I don't have a second phone to call myself. Friends say that on their end it sounds like I am not answering the call (i.e. they have a call signal, but just nobody is answering). They have no busy or unavailable signal. What exactly do you mean by a network reset, what would I exactly have to do? I was thinking about a factory reset, but I'm afraid that I will lose all my data and application settings. I do not know if it matters, but I have been using this phone since the premiere of the S21 Ultra, and when I bought it, I transferred all data via the data migration service from the previous S10+ phone, to which a few years ago I similarly transferred data from the S9+, to which I transferred data from S8 + earlier
Maybe you have the "do not disturb" option on? When I have this on, I can't see who is calling me.
I checked, unfortunately it's not that, if it were, I would never see someone calling, but my problem seems to be random.
Sierra76 said:
I don't have a second phone to call myself. Friends say that on their end it sounds like I am not answering the call (i.e. they have a call signal, but just nobody is answering). They have no busy or unavailable signal. What exactly do you mean by a network reset, what would I exactly have to do? I was thinking about a factory reset, but I'm afraid that I will lose all my data and application settings. I do not know if it matters, but I have been using this phone since the premiere of the S21 Ultra, and when I bought it, I transferred all data via the data migration service from the previous S10+ phone, to which a few years ago I similarly transferred data from the S9+, to which I transferred data from S8 + earlier
Click to expand...
Click to collapse
u need to go to settings>general>reset and there tap reset network settings..
Hi,
I experience very similar problem. I tried to reset network settings, "hard" reset the phone, playing around different mobile network settings... nothing helps. I'm not sure if it is phone hibernation issue or kind of removal of the phone from cellular antenna.
I have another phone I use to watch this s21ultra issue. Practically each day it happens that the s21 ultra does not react to my call, of course most of the time it works properly, but there are some tries, when it fails. In such case on the phone I call from I get a message "user is not available". But then, leaving the s21ultra untouched for 10 minutes I get SMS saying that someone tried to contact me, so it is not obvious that the phone hibernated.
I was not able to reproduce the problem on the other sim card put in s21ultra (the carrier is different). I was not able to reproduce the problem on the other phone and the sim card from taken from s21ultra. In my opinion it is related to "weak" mobile signal and kind of "sensitivity" of s21ultra to low signal quality.
I reported the problem to my mobile network provider, but I'm still waiting for the answer. Anyway, I'm going to do the following:
- ask for sim card replacement (cheapest option),
- (if above does not help) go to samsung service and ask to check the phone - I hope they have some diagnostics tools,
- (if above does not help) install the second sim card (from different provider) and configure redirection of calls in case of "user unavailable" - I know it is "stupid" solution - but at least one of the carrier should work
- optionally root the phone - Can anyone confirm if it may help? At least I could enable toggling airplane mode each minute

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