[Q] Problem with WiFi and Mobile Data - Galaxy S II Q&A, Help & Troubleshooting

Hello guys,
my problem relates to activating WiFi and/or mobile data on my phone.
First of all WiFi:
I'm used to enable it via status bar. But when clicked nothing happens but the symbol changing. When entering the WiFi settings through systemsettings WiFi is disabled. Enabling it there works fine, but is not what I would expect.
Before it worked fine.
Next problem.
When WiFi is enabled (it's most of the time when I'm at home) I disable mobile data (no matter if 2g or 3g). It runs over night till i leave home. Now when I want to enable mobile data, nothing happens. Even an analog work around described like above wouldn't work. The only way to get it working is to reboot the phone..
Any idea how to solve it?
My specs:
Samsung Galaxy S2 (int)
Kernel: Kernel_Siyah-Dorimanx-V9.10-[10-51]-[21-03]-JB-CM-AOKP-SGII-PWR-CORE
ROM: cm-10.1-20130321-NIGHTLY-i9100
Modem: I9100XXLS8

My fiancée and I got the same problem with the mobile data. I updated her phone with the latest nightly to be sure it's nothing that may have already been solved, so she got cm-10.1-20130320 nightly, I have yet to update from cm10, still running cm-10-20121209 nightly.
After turning on wifi or turning off mobile data (mobile data connection has to be interrupted) and leaving it off for a longer period of time, turning mobile data on again does not work. The button changes, the phone also reflects this in the data usage menu, the button is set to on, but nothing happens. Rebooting the phone then solves the problem, Mobile data can be turned on and off again for some time but leaving it turned off again will result in the same error. I hope this is somehow comprehensible.
Any idea what we can do about it?

I don't use CM anymore, but when I used to run CM9 that happened to me occasionally. Restoring a backup or reflashing the rom & kernel directly over the top of the current instal without wiping (if you're using another kernel) was the only thing that fixed it for me. You may find that reflashing the rom/kernel doesn't work; if it doesn't, I'd do a clean install (wipe/etc; tho I never had to do this to fix this problem).

Related

[Q] Data doesn't work, airplane mode is the only fix... any ideas?

I posted a question about this last week thinking it was a wifi problem, but it turns out it happens when I'm on data too, so it's an overall data problem... I'm just using wifi most of the time so that was the only place I had noticed it.
Occasionally my phone will stop being able to send/receive data. I'll turn it on and try to load a web page, for example, and it will just hang. Turning wifi on/off doesn't fix it, and turning data on/off doesn't seem to fix it either. The only solution I've found is going into airplane mode for a second. The frequency varies.. it seems to happen between 1-5 times a day, so it's pretty inconvenient.
I've read around a bit and it sounds like it's caused by the phone trying to get a 4G connection but it isn't able to or something, so it just hangs there and never lets the 3g/wifi connections get used (due to priority of connections or something). I almost always have wifi and don't care that much about data speeds, so if disabling 4g altogether would fix the problem I'm game (although I'd prefer another solution...). I tried the *#*#4636#*#* code to change it to GSM only (I read somewhere that that'll disable 4g), but it instantly reverts back to what it originally was, so that doesn't seem like it'll work. Is there another way to disable 4g?
I've got the stock ROM running Entropy's latest DD kernel.
I've had this same exact issue while running Miui and the Siyah kernel. What I've narrowed it down to is likely to be some sort of power save mode that kicks in when the phone goes into deep sleep mode. I haven't had the issue since I've ran the Kernel cleaning scripts and reflashed the latest Siyah kernel, but it reappears occasionally. On certain releases of Siyah, I've ran SetCPU at a minimum of 200Mhz to keep the phone from going into deep sleep just so it wouldn't turn off the cell radio.
Also, as a side note, I've had this happen when my phone loses signal. After so much searching, it will turn off the entire cell radio and display "Emergency Calls Only" until Airplane mode is toggled.
I had this same problem even back with my Captivate. Hoping ICS won't have the same issue. I'm running CM7 and Siyah kernel.
I am having the same problem Data wont work until i turn airplane mode on and off
I am having the same problem Data wont work until i turn airplane mode on and off.
Have you found a resolution?

[Q] CM11 (m12?) - mobile data / wifi die, require reboot

My wife's verizon GS4 has CM11, last M build, I think M12?... Anyways, it has a nasty habit of losing its mobile data connection periodically. She has to reboot the phone to restore data access, and she may not notice for hours, when she hasn't gotten any emails or hangouts chats in a while. As soon as she comes home and connects to the wifi, everything comes through again.
Also, her wifi gets stuck sometimes, where it will just lose connection, and trying to cycle wifi just results in it getting stuck on "turning wifi on..." or "turning wifi off...". Again, the only remedy is a reboot.
Does anybody know of a fix for this? Should I try to get her phone flashed over to a GPE rom? Should I move to a lollipop GPE rom if it exists? If so, is there a "best" way of backing up / flashing / restoring outside of titanium backup everything?
bumps...

Mobile Network can't connect after using Wifi (S6 Edge)

I have a bizarre problem that just started happening, I can't connect to mobile network after using a wifi connection for some time. No matter what I do, the S6 edge won't connect.
I've tried switching mobile connection on and off, restarting the phone, turning the phone off and back on, switching sim cards with another phone (the other phone immediately gets connection), switching airplane mode on/off. I've gone to Samsung and my mobile provider and they have both blamed each other (of course, right?). The most frustrating part is that this happens about 50-75% of the time with my home and office wifi, and almost never with anyone else's wifi (for example trying it in the Samsung store). It will sometimes get a connection 10-15 minutes later, sometimes it takes several hours.
Samsung service has offered to take the phone in to 'review and test' but they need to do a full wipe and it will most likely take several days of testing. Knowing that the problem is almost impossible to replicate outside of my home and office, and the issue goes away by the time a service tech will ever see the phone, and the struggle to back up and restore my apps without root, I'm not sure what to do right now. Temporarily I have turned off wifi and just use mobile connection, but I'll hit my monthly data cap really soon.
This started happening 2 weeks after AOE4, just upgraded to AOE8 and it still happens. My phone is SM-G9250 with Taiwan ROM.
Screenshots attached to show I have good signal strength but not data connection, and the SIM in another phone having a connection (Zenfone 5 with lollipop).
drakon.us said:
I have a bizarre problem that just started happening, I can't connect to mobile network after using a wifi connection for some time. No matter what I do, the S6 edge won't connect.
I've tried switching mobile connection on and off, restarting the phone, turning the phone off and back on, switching sim cards with another phone (the other phone immediately gets connection), switching airplane mode on/off. I've gone to Samsung and my mobile provider and they have both blamed each other (of course, right?). The most frustrating part is that this happens about 50-75% of the time with my home and office wifi, and almost never with anyone else's wifi (for example trying it in the Samsung store). It will sometimes get a connection 10-15 minutes later, sometimes it takes several hours.
Samsung service has offered to take the phone in to 'review and test' but they need to do a full wipe and it will most likely take several days of testing. Knowing that the problem is almost impossible to replicate outside of my home and office, and the issue goes away by the time a service tech will ever see the phone, and the struggle to back up and restore my apps without root, I'm not sure what to do right now. Temporarily I have turned off wifi and just use mobile connection, but I'll hit my monthly data cap really soon.
This started happening 2 weeks after AOE4, just upgraded to AOE8 and it still happens. My phone is SM-G9250 with Taiwan ROM.
Screenshots attached to show I have good signal strength but not data connection, and the SIM in another phone having a connection (Zenfone 5 with lollipop).
Click to expand...
Click to collapse
Did you try wiping the cache?
I thought the cache is wiped whenever you do OTA update?
I'll do it manually again right now and see if it helps. Thanks for the tip.
drakon.us said:
I have a bizarre problem that just started happening, I can't connect to mobile network after using a wifi connection for some time. No matter what I do, the S6 edge won't connect.
I've tried switching mobile connection on and off, restarting the phone, turning the phone off and back on, switching sim cards with another phone (the other phone immediately gets connection), switching airplane mode on/off. I've gone to Samsung and my mobile provider and they have both blamed each other (of course, right?). The most frustrating part is that this happens about 50-75% of the time with my home and office wifi, and almost never with anyone else's wifi (for example trying it in the Samsung store). It will sometimes get a connection 10-15 minutes later, sometimes it takes several hours.
Samsung service has offered to take the phone in to 'review and test' but they need to do a full wipe and it will most likely take several days of testing. Knowing that the problem is almost impossible to replicate outside of my home and office, and the issue goes away by the time a service tech will ever see the phone, and the struggle to back up and restore my apps without root, I'm not sure what to do right now. Temporarily I have turned off wifi and just use mobile connection, but I'll hit my monthly data cap really soon.
This started happening 2 weeks after AOE4, just upgraded to AOE8 and it still happens. My phone is SM-G9250 with Taiwan ROM.
Screenshots attached to show I have good signal strength but not data connection, and the SIM in another phone having a connection (Zenfone 5 with lollipop).
Click to expand...
Click to collapse
I have the same issue! Very annoying, and miss phone calls all the time or am unable to make them because of this...
Will try the cache wipe
Wiped the system cache from Boot, problem still there.
I also wiped the cache for all apps.
I also tried the phone in safe mode and has the same problem.
Sent from my SM-G9250 using XDA Free mobile app
So the only work around I can find is to go into settings:
1.) 'Mobile Networks'
2.) 'Network mode'
3.) Switch to 3g/2g (I don't have 4G right now, have to pay extra for it)
4.) go to 'Network operators'
5.) 'Search Networks'
6.) choose my network provider
Now the phone works just like it always did, smoothly switch between wifi and 3G and H/H+
I'm not sure what changed as I have never had 4G since it costs me extra.

[Help][Jiayu G3S] Phone is shutting down after connects to mobile network

So I tried to find out why, but I haven't found a relevant thread. So my phone (MTK6589), a little old now I know, works fine. I mean it worked until this morning when if I tried to connect it to mobile network it shuts down instantly after connecting. Tried with a different SIM and other network and the same. All works fine until it connects and then it shutsdown in an instant. To reboot I need to take the battery off, but not always sometimes it works without taking the battery.
Had a custom ROM, so I reinstalled the stock ROM and kernel. It still does the same. It works fine if I go to airplane mode even if I turn the wifi on, but otherwise, when I start the mobile network and it finds a connection, it instantly shuts down. Stressed tested the battery and CPU, memory etc and they work fine.
Has anyone encountered this? What can cause it? Why only when it finds a network connection. Can it be hardware related?

New WIFI Bug [Not Solved] [Need Help]

How the bug works:
So I can be connected to my wifi, surfing the web, on youtube or anything else. But all of a sudden my phone disconnects me from my wifi. Now, this in itself is quite frustrating as usually I'm in the middle of doing (please note though that it has also happened plentiful times whilst I haven't been using it too) something and it takes a few minutes to realise that it had happened. But unfortunately, this isn't the end of it. When I go to reconnect to my wifi I press it and nothing happens. Literally nothing. No animation, no sound and it never connects it just refuses to. So then the next logical solution is to turn off my wifi and turn it back on so it re-connects. And it works it connects to my wifi. But about 30 seconds later it will disconnect again. Sometimes though when it disconnects, it does state that an authentication error has occurred. But back to the bug. Then when pressing it nothing happens again. So I have to turn off my wifi and turn it back on usually 4-5 times before it finally stays connected.
This bug usually happens twice a day and is very frustrating, so again any help would be amazing!!
What I have tried:
- Turning off the device does not work. The bug is still present
- Using WPS to connect works sometimes but is very hit and miss
- setting my wifi to stay on whilst the device is sleeping
- wiping all network settings
- wiping all wifi settings back to default (in the router that is)
- Factory Resetting
Some other things to note:
This bug has not always been present. It has only started to occur within the past two months and I have had this device for 2 years now. I have not changed any wifi or device settings for it to happen. And it just started one day.
My dad's S6's wifi is completely dead.. I click the toggle switch and no networks show up.
Also tried clearing cache, resetting network settings, and even factory reset.
I think the WIFI antenna is dead/dying?
Just happened out of the blue as well..
Perhaps a root and new rom will fix?

Categories

Resources