[Q] Z2 doesn't reconnect after losing signal - Xperia Z2 Q&A, Help & Troubleshooting

I got the Z2 and it wont reconnect to the network unless I factory reset the phone. Then its fine untill I lose the signal again.
I got the phone and updated to kitkat via pc companion, it failed midway through and couldn't do anything on my phone so I flashed it with a generic rom. Then the problem started and kept on staying so I decided that to download a different rom and all seemed well until I lost connection again.
It finds every network but mine, this is weird because when I factory reset it then it finds my network again.
also when I restart it then it connects to the network for a second and then the signal disappears again.
Any ideas on how to resolve this issue?

I think this is software related as he phone showed that it had no signal but when I decided to call someone then the signal came back.
I lost signal again and had to factory reset, installed a network signal speed booster and I see that it restarts the phone's moden....Hopefully this helps.
D6503 model.

Related

Wifi error after OTA update

Rooted the phone then applied the OTA update and since then i keep getting a wifi error. Im currently out of the country so can't connect to sprint. Any ideas?
Anyone?
Sent from my GT-P7510 using Tapatalk
Yup, had this problem after applying this OTA.
When I click the checkbox to enable wifi, it just shows "error" and does not enable wifi.
A factory reset fixed it for me.
My wifi turns on and connect but won't give me any data
Sent from my MB855 using Tapatalk
The Atrix has a driver related issue that causes problems connecting to WiFi access points in certain countries. I'm pretty sure they have figured out a workaround over in the Atrix XDA section, sorry I don't have a link for you.
Hi,
My name is Fisher, I have the same problem, I have the phone in Australia and I updated over wifi then my wifi just says error underneath it, also 4G does not work. I can turn wifi on by first putting the phone into aeroplane mode then restarting and turning wifi on while still in aeroplane mode. I have managed to get all working occasionally by having aeroplane mode and wifi on, then going to system updates which are greyed out then turning off aeroplane mode by holding down the power button and when ive done that i have a second or so before the wifi dies to click motorola software update that is now not greyed and it sometimes kicks everything on;-)
I have tried factory resetting the phone 3 times and formatting internal sd on third time, did nothing.
Now i have some dmesg logs with the wifi under error, working in aeroplane mode and all working with my trick, so let me knowif u want them all.
I have a feeling the issue could be a sprint app or process that disables it, look at the access/security settings for sprint zone, it can control wifi, everything seems to be briefley activated when i start the phone in the notification bar then wifi and 4g die, so maybe a sprint process detects that the phone has not activated or something and kills wifi and 4g.
I have reported this on the motorola forum in the thread someone else started, look for " motorola photon wifi error" in google and it might be the first hit.
Fisher
fisher.grubb said:
Hi,
My name is Fisher, I have the same problem, I have the phone in Australia and I updated over wifi then my wifi just says error underneath it, also 4G does not work. I can turn wifi on by first putting the phone into aeroplane mode then restarting and turning wifi on while still in aeroplane mode. I have managed to get all working occasionally by having aeroplane mode and wifi on, then going to system updates which are greyed out then turning off aeroplane mode by holding down the power button and when ive done that i have a second or so before the wifi dies to click motorola software update that is now not greyed and it sometimes kicks everything on;-)
I have tried factory resetting the phone 3 times and formatting internal sd on third time, did nothing.
Now i have some dmesg logs with the wifi under error, working in aeroplane mode and all working with my trick, so let me knowif u want them all.
I have a feeling the issue could be a sprint app or process that disables it, look at the access/security settings for sprint zone, it can control wifi, everything seems to be briefley activated when i start the phone in the notification bar then wifi and 4g die, so maybe a sprint process detects that the phone has not activated or something and kills wifi and 4g.
I have reported this on the motorola forum in the thread someone else started, look for " motorola photon wifi error" in google and it might be the first hit.
Fisher
Click to expand...
Click to collapse
Sounds good. Ill give that a shot. Lemme know if you find out more
Mine is working fine, though today I turn WIFI off and my battery had a run away effect. The battery drained 30% in 10 min and the phone was at 116 degrees. It also rebooted itself twice but now it is fine and I turned wifi on and off a few times and no ill effect.
and yep I have the update.
Wifi ERROR after OTA update
hello everyone
i am not a US resident and i bought this amazing phone i am using Cellcom Israel Sim card
i just saw the firmware update,the update run smooth but after the reboot i try'd to turn Wifi on
and getting an ERROR.
try'd to reboot the phone - wifi not working
try'd to pull out the battery and restart - wifi not working
the only thing that works is when i restart the phone in AIRPLANE MODE the wifi works
but soon as i turn the AIRPLANE MODE off the wifi disconnected and cannot turn
it on again until turn back the AIRPLANE MODE again.
i do not using any data plan connection i dont have any...
what can i do??
Just do a factory reset. That will solve this problem.
Its a known problem. Lot of people are facing it after applying OTA. Just do factory reset and you should be fine.
Wifi ERROR after OTA update
hope you right...some pp'l that done this method complains that it didnt work
ohh shoot lets try!
its no go gives me an error when i need to activate the account via wifi.
this sux
Funkym0nkey said:
Just do a factory reset. That will solve this problem.
Its a known problem. Lot of people are facing it after applying OTA. Just do factory reset and you should be fine.
Click to expand...
Click to collapse
Factory reset doesnt do a thing bro
Hi, I had the same issue actually watch the router and say the wifi connect and then drop, i installed wifi manager and then for some reason it started working and i haven't had a issue since.
no sure why it did this but i also restarted the phone multiple times trying to get it syncing and it wouldn't until that program was installed then after i got connected i uninstalled the app and it still connects without the app
got installed "wifi manager" and again error "error enabling wifi"
Factory resetting does nothing for me, I even formatted the internal memory as well on the third time, the only way so far I have managed to turn wifi and 4g back on and also data as data seems disabled is by:
Enable aeroplane mode, restart and then enable wifi, then go to system updates and you will see the 3 options greyed out, disable aeroplane mode by holding down the power button then click on update motorola software and most of the time that has worked for me.
kc_sheets mentioned installing wifi manager, I have installed it but not restarted my phone as I've managed to get it all temporarily working and Ill test the wifi manager when I have to restart.
Let me know if anyone else can get them all working using my method.
For troubleshooting, I know dmesg is good and probably lsmod, what other linux info can help me find out what the issue it, I would not be surprised if sprint has done something to disable wifi, 4g and data as the phone starts up, but it looks like it only disables at the last minute, does anyones wifi connect as you start the phone up, I think mine may have done.
I'm hoping we can just rename the process or app that is the issue and have a non crippled phone what we paid good money for.
Fisher
just flashed the phone and guess what??
wifi working again!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! w000ttttttttttttttttt
----------------------
after reboot the wifi error starts again.
that means no luck
I'm also out of the States and I just started having wifi issues today. It would see the SSID, try to obtain IP, then fail. I just set a static IP, default gateway, etc... and that did the trick.
jomare711 said:
I'm also out of the States and I just started having wifi issues today. It would see the SSID, try to obtain IP, then fail. I just set a static IP, default gateway, etc... and that did the trick.
Click to expand...
Click to collapse
you dont have wifi problems,its your router problem
my problems are with the wifi connection its not even trying to connect or activated its getting an error when i press the wifi button.
Posted on motorolla forum:
Hey guys, same problem - briefly:
Sprint customer - overseas for the next 6 months,
1. OTA update successful, achieved over wifi
2. phone restarted, wifi connectivity lost "error" as with fisher and the rest
3. airplane mode allows wifi connection until GSM is connected again, at which point it gets knocked off
4. I /also/ fat fingered my phone during one of the restarts and had both wifi and GSM working, but it's my nature to test things, so i restarted and of course now it's gone.
5. I am not able to attempt wally's re-register with Sprint approach as I will be away from the states untill January
6. I tried the update sprint zone fix - no luck
7. I tried the disable roaming guards - same as fisher, some of them are green and grayed out, no luck
Thank you !

[Q] Xperia P mobile data issues

I have posted this on the Sony Xperia P forums but I have yet to to get a response. As this is a pressing issue, I have to return the phone to the store by tomorrow at the latest or not at all, I post it here aswell.
I just bought my Xperia P last week. Since I've been having connection issues. It started, as far as I can tell in such a short period of use with the wifi connection. When I would go out of range of my home wifi it would freeze, only fix was to reboot the phone. It would not switch over to mobile data at that point either so I had no connection at all untill I rebooted. I've since been trying to figure out why the wifi froze. I've reinstalled the latest phone update through PC Companion and I've factory resetted the phone on the device itself.
My wifi issues appear to be fixed after this however, and equally annoying, now my mobile data won't work. I see the H appearing next to the reception bars and arrows up and down appear next to it but no web page will load, facebook or mail don't work either. I've been trying going in airplane mode, just toggeling the data connection, rebooting the device, nothing works consistently. Sometimes mobile data will work, but more often it wil not.
I have contacted the store and they are willing to exchange the phone. However, I wanted to check here first to see if this is a common problem, if its a software issue, a new phone won't help much. If it is a software issue, is there anything I can do to fix it myself?
The phone came with ICS preinstalled.

Lost network connectivity and phone signal

I am on ecliptic rez v7. I just had this problem today where all of a sudden, I had no network connectivity and no phone signal at all. I had not messed with anything network wise for my phone. I tried restarting my phone, clearing cache and dalvik cache, turning the phone completely off and on, but nothing. I couldnt even get the option for network modes on my phone, it just had limited signal for emergency calls.
I ended up reflashing the same rom and its working back to normal, but I was wondering what could have possiblly caused this. I had this happen only 1 other time to my phone randomly, but it was on counterstrikes CM9 rom.
Has anyone had this happen to their phone?

[GT-P7500R (P4)] Tab 10.1 3G stopped working after airplane mode. (CM10.1 Nightly)

I updated to the latest nightly (9/22) to try and relieve this problem to no avail. I've been running CM Nightlies on my P4 since they've been available. I always manually download them since, for whatever reason, Rom Manager seems to detect my device as the P4-wifi. I assure you the 3G (HSPA) modem works. I have a SIM slot, with SIM that has activated service (UMTS/HSPA). My cell phone is on the same networks and it picks up signal from my carrier fine.
With that out of the way; My issue:
Two days ago, I was leaving my house to visit family, and I wasn't going to bring my charger for my Tab, so I put the device in airplane mode to conserve battery. In hindsight, I should have just asked the device to power off, but that's besides the point. When I tried turning off Airplane mode, the cellular network did not become available again; this situation has not changed since.
What I've done: Rebooted the device after switching out of airplane mode, re-entered airplane mode and left it again, updated to the latest CM. I've opened my tab and reseated the connections for SIM and antenna (at least, the connections I can reseat, I have), I've also completely disconnected power by unplugging the battery and reconnecting it. Additionally, I got into some of the hidden menus and verified that WCDMA, which, I believe is the underlying tech for the local HSPA connection, is preferred to the cell radio.
Looking at the device, if I ask it to check for mobile networks, the list comes back blank. The network status shows "UNKNOWN:0" and the lockscreen shows "NO SERVICE." instead of "NO SIM" (which is what it shows when I remove the SIM). From what I can tell the radio has shut off and will not come back on.
Throughout all this Wifi still works perfectly, so the device isn't useless, however, I'm planning to sell this device and I would like it to be as fully functional as possible when I hand it off to it's next owner, so getting this solved is very important to me. Any and all suggestions are appreciated and I'm basically willing to try anything at this point. I feel as though I've tried everything short of a factory reset, which I'm not sure if that would help (I've even wiped cache and dalvik).
In case it's relevant, I'm in Canada, carrier is Telus.
Thanks for reading.
EDIT: I've just finished restoring the device to Stock 4.0.4 (I've used this stock image before when I had issues with the device and confirmed it is fully functional) and I am still having trouble. this points to either a carrier issue or a hardware issue. I will be calling the carrier in the morning, despite believing that this isn't the case. any suggestions on what could be the problem are still welcome, I'm willing to try just about anything at this point.
@Mystik
Back in the CM 4.1.2 days on the e4gt...we had a similiar problem. Now, I don't have you're device. But when this problem arose in the epic. We had a work around where we would turn airplane mode on and power off the device. Then power the device back up. When that didn't work we had to flash a modem, then flash back to the one we wanted.
Also, make sure after you turn off airplane mode.. that the mobile data under settings/more is enabled... sometimes it will not re-enable itself.
Let me know if this works.. if not I would be happy to help you search up a fix..

WiFi problems and adb help - Solved in service

Hi
After an OTA update my wifi is turning off when the phone sleeps (screen off) ; i tried every fix that i could find, router and phone reset, changed router, stopped all power optimizations on the phone, safe mode etc... nothing helps. My wifi stays on only if I'm not connected to a network; if I connect to any network and close the screen, after 1-2 minutes when i pick up the phone the wifi is stopped. I can start it again and connect but it's annoying.
I tried to use adb but I'm not sure if something in there is wrong and what to change, maybe someone can help me with those or some ideas.
PS: android pie csd4, not rooted.
usb_mass_storage_enabled=1
verifier_timeout=15000
vzw_network_lock=1
wait_for_debugger=0
webview_provider=com.android.chrome
wifi_display_on=0
wifi_max_dhcp_retry_count=9
wifi_networks_available_notification_on=1
wifi_num_of_switch_to_mobile_data_toggle=2
wifi_on=1
wifi_p2p_device_name=[Phone] Galaxy S9+
wifi_scan_always_enabled=1
wifi_sleep_policy=2
wifi_wakeup_enabled=0
wifi_watchdog_on=1
wifi_watchdog_poor_network_aggressive_mode_on=0
wifi_watchdog_poor_network_test_enabled=0
wifi_watchdog_version=589826
window_animation_scale=1.0
wireless_charging_started_sound=/system/media/audio/ui/ChargingStarted.ogg
zen_duration=0
zen_mode=0
zen_mode_config_etag=-1487042216
zen_settings_suggestion_viewed=0
zen_settings_updated=1
zram_enabled=1
The phone is in service, repaired on warranty ; they changed the motherboard, battery and charging port.
If you dont mind plz
How would we go about finding out if this has happened to my phone
deleted. wrong page.

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