[Q] Losing data connection after losing and regaining signal - Xperia Z3 Compact Q&A, Help & Troubleshooting

I have found that whenever my phone loses signal and then regains it, I have no data connection until I restart the phone. Even toggling airplane mode or manual signal search does not restore data. I have tried disabling 4G but that doesn't make any difference. I also don't have WiFi on as I never use it.
Does anyone else have this same problem and know a solution? It is extremely frustrating having to restart my phone up to 5 times a day and not receive emails etc.

I had more or less the same. What helped in my case was adding the apn of my provider manually instead of letting the network and phone handle it.

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cantthinkofone said:
I have found that whenever my phone loses signal and then regains it, I have no data connection until I restart the phone. Even toggling airplane mode or manual signal search does not restore data. I have tried disabling 4G but that doesn't make any difference. I also don't have WiFi on as I never use it.
Does anyone else have this same problem and know a solution? It is extremely frustrating having to restart my phone up to 5 times a day and not receive emails etc.
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this can cause by network or firmware bug
you can manually add APN if system delete it then repair Firmware by PC Companion
:good:

I have the same issue.
Have you managed to resolve it yet?

adamryd said:
I have the same issue.
Have you managed to resolve it yet?
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Not yet. I have tried deleting the apn end adding it again myself but it's the same.

adamryd said:
I have the same issue.
Have you managed to resolve it yet?
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Click to collapse
my problem may be slightly different in that I could not connect to Internet when out of wifi range unless I did a restart.Resolved by switching off stamina modes.

You coult try this: http://forums.androidcentral.com/so...ia-z3-losing-data-connection.html#post4235021
It works for me. Next week the Z3C will be updated to Lollipop. Let's hope it will solve this bug.

Related

[Q] CM10 and no connection to internet

Hello all,
I flashed CM10.0 a few weeks ago and everything was working fine up until 2 days ago, now my I9000 won't connect to the internet at all. I was using Easy Battery Saver which cancels the data signal everytime the phone is idle, but this stopped turning the connection on. I uninstalled it hoping the phone would revert back to normal but can't get connected. I restored the app hoping it would pick up the settings again but still no joy.
I have wiped everything including user data and the caches, done a factory reset and reflashed the rom. The signal did return for about 30 minutes after the flash but the connection has since died again. I've tried switching on the roaming and national roaming, also no luck.
Does anyone have any idea what might be causing this or even how to fix it?
Thanks in advance
Boogaloo27 said:
Hello all,
I flashed CM10.0 a few weeks ago and everything was working fine up until 2 days ago, now my I9000 won't connect to the internet at all. I was using Easy Battery Saver which cancels the data signal everytime the phone is idle, but this stopped turning the connection on. I uninstalled it hoping the phone would revert back to normal but can't get connected. I restored the app hoping it would pick up the settings again but still no joy.
I have wiped everything including user data and the caches, done a factory reset and reflashed the rom. The signal did return for about 30 minutes after the flash but the connection has since died again. I've tried switching on the roaming and national roaming, also no luck.
Does anyone have any idea what might be causing this or even how to fix it?
Thanks in advance
Click to expand...
Click to collapse
I am just guessing, but as from what I understand you uninstalled the application when you were not having the internet connection working. Right? The correct settings have possibly remained overwritten (some applications block the outgoing data traffic by changing the connection settings). Give APNDroid a try and if unsuccessful try going to your phone operator webpages and find the correct connection settings.
I am using CM10 with APNDroid which works fine. However sometimes I cannot connect to 3G as well. Switching the APNDroid on/off couple of times or rebooting solves the issue.
nameh said:
I am just guessing, but as from what I understand you uninstalled the application when you were not having the internet connection working. Right? The correct settings have possibly remained overwritten (some applications block the outgoing data traffic by changing the connection settings). Give APNDroid a try and if unsuccessful try going to your phone operator webpages and find the correct connection settings.
I am using CM10 with APNDroid which works fine. However sometimes I cannot connect to 3G as well. Switching the APNDroid on/off couple of times or rebooting solves the issue.
Click to expand...
Click to collapse
Thanks for the response mate. You guessed right, APNDroid hasn't fixed it and I haven't been able to find APN settings other than the one that is already in my phone. Might reverting to stock solve the issue? My contract is up at the end of the month so I could handle living with GB until then .
Hi again, reverting back will definitely not solve the issue. From what you had said I understand that the internet settings are somewhat messed up.
These settings are bound to your SIM card. By up/downgrading ROM these remain.
Could you check if your APN settings are correct (I assume you need to check with your provider).
Good luck and keep us informed.
Sent from my GT-I9000 using xda app-developers app
Just found the APN settings online. Reset my APN and it looks to be working. I'll keep an eye on it just in case but I think either the ROM or the App messed up the user/password on the APN.
Hopefully it's all fixed. Thanks for all the help.
first try apn tweaker from market then if no luck what worked for me
1 flash darkyrom 10.2 re
2 alliancerom jw4
3 then jw8
working well for past week

[Q] My mobile data disappears until I reboot

Hi XDA, I bought a Z3 Compact a few days ago, and yesterday this weird bug occured for the first time. The data is simply turned off suddenly when I check my phone, and nothing I do will turn it back on.. Toggling mobile data back and forth, searching for networks and clicking different ones, downloading internet settings again, airplane mode on/off etc. - nothing works except rebooting the phone, and then the data works again until next time it messes up. It did it again last night.
I googled the issue, and it seems some S4 users have had same problem with Android 4.4.2? Link to the issue is found here http://support.t-mobile.com/thread/70532
Apparently they report that you cant make calls either when this bug occurs, even when the phone says it has bars, however I havent tested regular calling. I will next time my device bugs out.
Has anyone experienced something similar and/or is there any way to fix it?
I had the same issue but only when Stamina mode was enabled. After a few hours I would lose mobile data and only a reboot would restore it. I cleared data for Eco Mode Controller, rebooted and the problem hasn't reoccurred since. Not sure if this helps or not.
rec71 said:
I had the same issue but only when Stamina mode was enabled. After a few hours I would lose mobile data and only a reboot would restore it. I cleared data for Eco Mode Controller, rebooted and the problem hasn't reoccurred since. Not sure if this helps or not.
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Click to collapse
I don't have it enabled, but I will definitely try clearing data for eco mode controller.
Also, I figured out that I can still make calls even when the data doesn't work. So it is not the same issue that is described in the link.
I think you have the same issue as described in this link? https://talk.sonymobile.com/t5/Xper...sappearing-in-Stamina-mode/m-p/845155#U845155
I have had stamina mode on however, so I will try it anyway.
I believe I had the same issue as you: cell signal dying after a while, but more often when cell reception was likely to be cut off (e.g. poor service areas or stamina mode). I'm also on T-Mobile in the US.
You can try the troubleshooting steps I took in this post, but what ultimately ended up working for me was a nano-SIM swap.
If you try all of the above and still haven't managed to fix it, I would suggest a phone swap.
Edit: typo
ahrex said:
I believe I had the same issue as you: cell signal dying after a while, but more often when cell reception was likely to be cut off (e.g. poor service areas or stamina mode). I'm also on T-Mobile in the US.
You can try the troubleshooting steps I took in this post, but what ultimately ended up working for me was a nano-SIM swap.
If you try all of the above and still haven't managed to fix it, I would suggest a phone swap.
Edit: typo
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Click to collapse
But if the sim card was the problem, I wouldnt be able to make calls right? I mean, there must be a connection since I can call.
Also, the phone doesn't give me a notification with "No sim card" or something similar..
But then again, weird errors can happen.. I will order a new sim card if the problem persists and I am unable to find a solution
Zylian91 said:
But if the sim card was the problem, I wouldnt be able to make calls right? I mean, there must be a connection since I can call.
Also, the phone doesn't give me a notification with "No sim card" or something similar..
But then again, weird errors can happen.. I will order a new sim card if the problem persists and I am unable to find a solution
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Click to collapse
You might be right. My issue was signal, then no signal. I never got a "no SIM card" message, however.
Best of luck!
I am now getting this issue without using Stamina mode. I am currently sat at work with no data, same thing happened yesterday. It worked fine this morning but at some point it has gone and only a reboot will get it back. I am missing important notifications because of this.
It seems to happen when I move around the building and the signal goes weak. The About -> Status page currently shows:
Signal strength: -79 dBm 17 asu
Mobile network type: HSPA
Service state: Voice: In service - Data: In service
Mobile network state: Disconnected
This is so frustrating.
---------- Post added at 12:43 PM ---------- Previous post was at 12:36 PM ----------
Just rebooted, data is back and now I see this in About -> Status:
Signal strength: -75 dBm 20 asu
Mobile network type: HSPA
Service state: Voice: In service - Data: In service
Mobile network state: Connected
Time to seek a refund.
I never got this issue fixed, even after repairing the device using PC Companion so I've sent it back to Clove for a refund. I think Bluetooth may have something to do with it though: I use BT in the car and have a Fitbit connected. I spent a day with BT disabled and the issue did not occur. I then went for a run with BT headphones connected and when I got back I had no mobile data again.
So goodbye Xperia Z3 Compact.
Anyone managed to fix it?
Hi!
I have the same issue. I use BT in my car too, but I think I lose it event without BT sometimes..
Anyone managed to fix it?
Just wanted to pitch in that I have the same problem (Z3 here).
I was going to return the phone but reading that the new lollipop update will arrive next week I think I'll hold out and see if that update won't fix it.
/Edit
See if Paul Wheeler3's post here works for you , I cant paste the link since I have posted 10 times here... but google with his name, and search for Xperia Z3 Losing Data Connection. should be one of the top hits.
Nischi85 said:
See if Paul Wheeler3's post here works for you , I cant paste the link since I have posted 10 times here... but google with his name, and search for Xperia Z3 Losing Data Connection. should be one of the top hits.
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COPIED and PASTED for your ENJOYMENT:
I thought I’d share a quick tweak that applies to most of Sony’s Xperia Android phones. If you’re on the Three network and travel around a fair bit you’ll notice that occasionally you’ll lose the data connection and it won’t always come back until you reboot the phone. Very annoying.
This happens because Three still have some 2G roaming agreements in place for areas they don’t have coverage. That doesn’t include data roaming however and a lot of devices (including the iPhone still) have trouble with this.
The way to fix this is to set the ‘Network Mode’ to ‘4G/WCMA’. Annoyingly you can’t set this in the ‘Mobile Network Settings’ section, you’ll need to go into hidden service menu to get to the setting. From the dialler, type this:
*#*#SERVICE#*#*
'Service' is typed as you would on a T9 predictive text keyboard, so thats one key press per letter.
Once your into the service menu, choose ‘Network Mode’ and then within this menu choose ‘LTE_WCDMA’.
You’ll see the radio stack reboot (so you’ll lose your connection while it does this).
No longer shall you experience the annoying ‘data never comes back’ issue.
It goes without saying that changing this setting is at your own risk.
You should manually set your network to WCDMA/GSM first. Then do as suggested above.
The problem is that the mode will automatically fall back to whatever is set in the UI if you even load the Mobile Networks control (by simply selecting the menu item in settings). If you leave it stock, then going into mobile networks will cause it to "fallback" into the failure mode. But if you manually set it to WCDMA/GSM then going in to Mobile Networks will only cause it to fallback into HSPA+, which isn't bad.
I'm getting this exact same issue but on my galaxy s5 only a reboot will resolve it I wonder if it is also in relation to 2G networks. I am on EE and the just recently sold to BT could be that their infrastructure now includes 2G coverage with no data for some places? Soon as I reboot back on 4G. Looked in settings and annoyingly only auto ones are 2G/3G/4G and 2G/3G there is no 3G/4G auto connection type guess I need to find a Samsung secret menu?
cpurick said:
You should manually set your network to WCDMA/GSM first. Then do as suggested above.
The problem is that the mode will automatically fall back to whatever is set in the UI if you even load the Mobile Networks control (by simply selecting the menu item in settings). If you leave it stock, then going into mobile networks will cause it to "fallback" into the failure mode. But if you manually set it to WCDMA/GSM then going in to Mobile Networks will only cause it to fallback into HSPA+, which isn't bad.
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Click to collapse
I am on a tmobile z3 and it says N/A no matter which mode I put it on in settings and then going to that secret menu. Please help. I'm on stock android 5.0.2 lollipop. Thanks!
still have the same bug with my Z3 compact, Android 6.0.1 and it is very resistent, even secure mode without 3rd party Apps, new SIM Card and new mobile phone (but with restored Sony Backup) helped. Vodafone germany and Sony Customer Care are idealess.
Last try will bei leaving SD card out and a reset with Sony companion without restoring backup

Mobile data problems.

Hello,
Recently something happen to my mobile data connection. I got full signals bar H/H+ next to it but when try to use anything that need data connection, I got message cannot connect.
The data sending arrow shows but not receiving one. Usually turning off and on mobile data fixes that issue but not for long. At first I tough that is stamina related but it can happen even during browsing/facebooking so not sleep mode related.
No problem with receiving/ sending texts or calls, seems only data related. And no such problem over WI-FI, it maintain to stay connected all the time.
I recreated firmware using PC companion but nothing. I tried my sim card on other phone to find out if network problem but no such issue.
I have used generic .157 software after root without unlocking bootloader.
I got that phone for about a year without any problems, unfortunatelly bought second hand and no chance to send to warranty
Maybe anyone has some ideas to try.
Thanks
Do you use any apps for blocking ads?
I had porblems with most sites including google and its apps not getting connection. I finally figured out that it was the ad blocker i used and that i had to upgrade my hosts files again (even if there was no new update) in order to get connections working again. hope that helps
theshadower10 said:
Do you use any apps for blocking ads?
I had porblems with most sites including google and its apps not getting connection. I finally figured out that it was the ad blocker i used and that i had to upgrade my hosts files again (even if there was no new update) in order to get connections working again. hope that helps
Click to expand...
Click to collapse
No I do not use any ads blocking apps. It occurs on fresh install, unrooted as well. Today suddenly stops playing spotify music and said connection error but for signal bars and H+ ;(
only thing i can think of is if you maybe have you data settings corrupted. That would cause your connection to not work. Does the internet work on some things but not others? And can you connect to internet with WiFi enabled?

Reboot is always required to use internet.

This is very inconvenient. If I disconnect from WiFi or LTE, then reconnect, apps do not detect the netwoork unless I reboot first. Has anyone experienced this problem or have a solution?
Snowby123 said:
This is very inconvenient. If I disconnect from WiFi or LTE, then reconnect, apps do not detect the netwoork unless I reboot first. Has anyone experienced this problem or have a solution?
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Click to collapse
Have you tried changing the Wi-Fi band on your router ?
N1NJATH3ORY said:
Have you tried changing the Wi-Fi band on your router ?
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Click to collapse
Never thought of doing that. I don't think that would be a complete solution though, because on LTE the issue still exists; it is not just a problem on WiFi.
Are you using some extreme power saving options/solutions/aps etc etc ?
Change wifi to 4G and try again.
pantypants said:
Change wifi to 4G and try again.
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Last nite I installed the OTA update of android 9. Since then the problems have been non existant. I will continue to update this post, and try all the tips I have been offered, if the problem returns.
I found the source of the problem. The VPN I use was preventing the apps from accessing the Internet.

Question Wifi turn off itself...

Hi,
After a while, as soon as I am out of wifi coverage, the wifi turn off itself without me doing anything.
Once back under wifi coverage if I must think to reactivate wifi else I needlessly consume my mobile DATA ...
What to do?
Thank
Some android apps causing this issue ! Find it and remove it.
Hi, I would suggest to remove your WiFi connection from your phone, restart it twice and reinstall it, including network name and password. Maybe that will solve your problem. Regards, kuzibri
Do you have this option enabled?
Abdullah.Csit said:
Some android apps causing this issue ! Find it and remove it.
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Click to collapse
I checked and no app has authorization to act on the wifi
kuzibri said:
Hi, I would suggest to remove your WiFi connection from your phone, restart it twice and reinstall it, including network name and password. Maybe that will solve your problem. Regards, kuzibri
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Click to collapse
Hi, no change.
fobtob387 said:
Do you have this option enabled?
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Click to collapse
I don't have this option :-/
Did you ever find a fix for this? I'm always forgetting to turn it back on, and using loads of mobile data.
This problem might casusing due to some application which is conflecting with wifi settings. advice to re install the applications and then test. Factory reset can be done after this step. Thanks
itsmorefun said:
Hi,
After a while, as soon as I am out of wifi coverage, the wifi turn off itself without me doing anything.
Once back under wifi coverage if I must think to reactivate wifi else I needlessly consume my mobile DATA ...
What to do?
Thank
Click to expand...
Click to collapse
I don't have these options, I'm running MiUI 12.5.6 if that makes any difference
lowndes783 said:
I don't have these options, I'm running MiUI 12.5.6 if that makes any difference
Click to expand...
Click to collapse
May you will try this
Xiaomi: How to Fix Wi-Fi Problem When Updating to MIUI 12 | ITIGIC
Many of Xiaomi's phones are still updating to MIUI 12. The company's new layer integrates a large number of novelties at the aesthetic and functional level. However, as often happens on many occasions, there are problems that only arise when these new versions reach thousands and thousands of...
itigic.com
lowndes783 said:
I don't have these options, I'm running MiUI 12.5.6 if that makes any difference
Click to expand...
Click to collapse
Or here
Thanks for the replies. But these solutions seem to be for a different issue, they have the WiFi randomly disconnecting. The issue I have, is the WiFi turning off, as in the WiFi toggle is turned off, it connects fine and is stable when in range. But when I leave range the toggle changes to off. I'd a assume it's either a bug, or a battery saving feature, but regardless I don't want to have to toggle the WiFi back on everytime I come into range of my WiFi.
lowndes783 said:
Thanks for the replies. But these solutions seem to be for a different issue, they have the WiFi randomly disconnecting. The issue I have, is the WiFi turning off, as in the WiFi toggle is turned off, it connects fine and is stable when in range. But when I leave range the toggle changes to off. I'd a assume it's either a bug, or a battery saving feature, but regardless I don't want to have to toggle the WiFi back on everytime I come into range of my WiFi.
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I would try it because sometimes different issues have the same solution.

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