Hi!
A few weeks ago I flashed CM9, since then I experience an enormous battery drain when I'm connected to the wifi of my university ("eduroam").
The "Android OS" process then consumes a lot more ressources than usual. At my home wifi everything is normal.
And when I turn off wifi at the college and use normal mobile network, everything is also fine.
Pictures:
s14.directupload.net/images/120513/erjgvknk.png
s14.directupload.net/images/120513/mau8hlfo.png
What I tried to fix it:
-flash different modems
-turn off location via wifi
-use different "EAP-Method" (TTLS and PEAP are supported by the college network)
I would be very happy if someone could help me!
Thanks in advance.
modems are not related to wifi... consider instead a different kernel..
I'm having the same problem, but on an i9100 device. Have observed this problem using different roms/kernels, all with similar result.
It seems the problem is not related to roms/kernels. When I'm using my home wi-fi network, their is no battery drains at all. The drain only happens when I'm connected to "eduroam" access point.
Monitored using BetterBatteryState, find long wakelock time for "wlan-rx-wake".
Now I just disable wifi when I'm not using it in an eduroam area.
Problem confirmed.
For me it's even worse. As soon as I add eduroam to my list of wifi access points, the drain is at 60-70 mA even on my home network.
Could this be related to the encryption or access control of eduroam? "Normal" wifi networks use wpa or whatever but not this weird PEAP or EAP, etc.
I have the same problem. Some networks drain the battery really fast, while battery drain at other Wi-Fi networks is normal...
Hello guys,
do you also suffering from low WiFi reception like mentioned on the following sources:
Thread in Official Sony Forum
[...]but the real kicker on the SP is WiFi reception. Abominable, horrifying, atrocious -- all valid words to describe the range at which it'll stay connected. We assume Sony will be able to address this with some kind of future firmware tweak, unless the antennae were lifted from the back of a truck in Shenzhen in 2007. When connected, the signal remains solid, but at 20 feet away from a router with one wall in its path, it's incredible to see it just about maintain a connection.
Click to expand...
Click to collapse
Summary of Engadget Hands on
It would be great if you could do some comparison of signal strength between Xperia SP and another phone on the same location and post the signal strength of both. You can see signal strength with this app: https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer
Thank you!
For me the range isnt that important, it's the fact that the wifi suddenly turns off by itself and it wont reconnect even though I was standing beside the router. I had to forget my home wifi then reboot the phone to get it to work again. Sony really needs to work on their software
Sent from my C5303 using xda premium
javidben said:
For me the range isnt that important, it's the fact that the wifi suddenly turns off by itself and it wont reconnect even though I was standing beside the router. I had to forget my home wifi then reboot the phone to get it to work again. Sony really needs to work on their software
Sent from my C5303 using xda premium
Click to expand...
Click to collapse
The range kind of sucks, but the speed is unaffected. Would be nice if it can be improved though. Never got disconnected before.
Sent from my Xperia SP using xda premium
I faced same problem as javidben. There is no problem with wifi range. I get almost full signal 10 ft away with 2 walls in between.
The problem is random disconnections. When disconnected, the phone remains disconnected from wifi anywhere between 2 mins up to 15 mins, for no apparent reason. When I just visit Wifi settings, it re-connects to the wifi network immediately. Very irritating indeed, having to do this from time to time.
Also, sometimes when I checked on my wifi router, I saw two entries (having same MAC address) for my Xperia SP in the 'connected devices' section. I was thinking this might be a router problem, but my Note 2 connects fine to the same router without any of these issues.
I'm connecting to 802.11n and I haven't experienced any problems with range, disconnects or throughput on my XSP.
t72e said:
The problem is random disconnections. When disconnected, the phone remains disconnected from wifi anywhere between 2 mins up to 15 mins, for no apparent reason. When I just visit Wifi settings, it re-connects to the wifi network immediately. Very irritating indeed, having to do this from time to time.
Click to expand...
Click to collapse
I have the exact same problem on my Defy+ running Android 2.3.7. I always thought this is an Android bug. So I think It comes from the power saving function (see Wi-Fi sleep policy) not working properly all the time and is not a device specific problem. Am I right?
On the other hand Sony has implementied its own power saving function (Stamina mode), so I expect this should not happen if Stamina mode is turned on.
Greetings
Benny
shooter_benny said:
I have the exact same problem on my Defy+ running Android 2.3.7. I always thought this is an Android bug. So I think It comes from the power saving function (see Wi-Fi sleep policy) not working properly all the time and is not a device specific problem. Am I right?
On the other hand Sony has implementied its own power saving function (Stamina mode), so I expect this should not happen if Stamina mode is turned on.
Greetings
Benny
Click to expand...
Click to collapse
I turned on Stamina mode, and tested over a period of 12 hours, using it intermittently, and disconnections are not happening any more
My Note2 is connected to Wifi all the time, but I did not see any disconnections, so looks like it may not be a generic Android problem.
I'll try this stamina mode and post here the result, also Xperiancing wifi dropp off,
axljackass said:
I'll try this stamina mode and post here the result, also Xperiancing wifi dropp off,
Click to expand...
Click to collapse
I'm trying the stamina mode, too.
Let's hope that this will solve the problem.
But of course, it's wierd that stamina mode can make wifi more stable, because stamina mode auto turns off wifi when phone is in standby mode...
kydwnas said:
I'm trying the stamina mode, too.
Let's hope that this will solve the problem.
But of course, it's wierd that stamina mode can make wifi more stable, because stamina mode auto turns off wifi when phone is in standby mode...
Click to expand...
Click to collapse
With Stamina or without stamina, the problem is the same. Disconnect every 5-6 min...
kydwnas said:
With Stamina or without stamina, the problem is the same. Disconnect every 5-6 min...
Click to expand...
Click to collapse
Probably your router firmware or settings, I used to have lots of problems with android devices having weird problems with wifi, bought a new router and they all started working fine
ZakooZ said:
Probably your router firmware or settings, I used to have lots of problems with android devices having weird problems with wifi, bought a new router and they all started working fine
Click to expand...
Click to collapse
My SGSII and SGSIV have not any problem with the same router. Besides, whether or not I 'd buy a new router, I couldn't ask cafes and other access points change their router just because xperia sp has wifi issues...
I have absolutely no problem with signal strength or deconnection.
I'm using my phone on different routers (home, work, friends, ...), no problem at all.
Xperia SP C5303.
there was a little issue with the wifi network on .211 fw
but upgrading to .284 solved it. now i have full bars everywhere. :good:
For me, I am facing exactly the same problem as some of you. The range sucks, I am only 15 ft (5m) away from my router with a door, and I get 0-1 bars only
Secondly, the WiFi does switch off randomly, but when I go to the settings and check, it connects again.
Sent from my C5303 using xda premium
dams SONY same probleem
my SP laggy and disconnected.
Seems like it's common problem then, I thought it was just me..
The Wi-fi seems to be really wonky on the SP, I've tested it sitting on the stairs beside my router for a while and it fluctuates between full and 2 bars of signal is less than a meter distance..
I've also experienced random disconnects but I think that's something to do with Wi-Fi power saving of some sort turning it off when it doesn't think you're using it.. Even if you're mid conversation with someone on whatever social media site or IM app...
Hopefully it can be fixed by Sony pushing a software update, which if it can I assume will be pushed with the next iteration of Android.
sarkar1990 said:
there was a little issue with the wifi network on .211 fw
but upgrading to .284 solved it. now i have full bars everywhere. :good:
Click to expand...
Click to collapse
How did you upgrade the firmware? I checked my phone and it doesn't have any upgrade available.
luizfamaral said:
How did you upgrade the firmware? I checked my phone and it doesn't have any upgrade available.
Click to expand...
Click to collapse
Flash the .284 FTF using flashtool. simple!
sarkar1990 said:
Flash the .284 FTF using flashtool. simple!
Click to expand...
Click to collapse
Where can I find .284 fw?
In the sony website says .257 is the latest version for Xperia SP.
And this .284 is a original fw?
Thanks.
Hello.
I've an XT1058, which was running 4.4.4 retail argentina, then got the ota for 5.1 ...
I noticed battery life was impacted, thus I flashed the full 5.1 firmware from scratch, just to be sure...
Battery didn't get any better...
After days and days of testing, I found that my issue is that LP does not deactivate the mobile radio while being connected to a wifi network...
That's just killing my stand by time on wifi, which oddly enough does not affect the phone while actually using mobile network...
So I'm currently having better battery life while on mobile data than a healthy wifi connection...
All because mobie radio keeps active all the time while on wifi...
I managed to partially fix this bug, but it does not always work...
It basically is to play with airplane mode, deactivate mobile data, and connecting to wifi...
All that, just mixing the order and crossing your fingers... Some times it works, some times it does not...
Airplane mode does not work either, since while activated, you can actually see that "radio active" under "idle device" keeps adding seconds...
And battery life is less...
Any ideas ?
I believe this is being addressed in M, but I do not thing XT1058 will get it...
I'm seriously considering downgrading to 4.4.4 because of this...
My phone is 100% stock, no unlock bootloader or root...
And yet, it's less usable than a few weeks ago...
Thank you.
I've managed to mitigate the issue by disabling mobile data before connecting to a WiFi... Also, this does not always work... But i am now able to control it a bit...
Sent from my XT1058
Hi guys, my MI8 have some problems with 4G and Wifi. If i try to use mobile data, it stops receiving the signal and the wifi no longer works for severla minutes. The wifi button no longer works and does not find the various signals. If i try to use only Wifi without the sim inside the phone it works for a while but then it doesn't work again.
Sometimes the mobile reboot randomly and has abnormal battery consumption.
I noticed baseband is unknown, but if i do *#06# appear Meid, Imei1 and Imei2.
What could be the problem? i think it is a hardware problem. I did the factory reset but it didn't fix the problem. I would like to try to repair it by myself to use it as a backup phone.
Ostians said:
Hi guys, my MI8 have some problems with 4G and Wifi. If i try to use mobile data, it stops receiving the signal and the wifi no longer works for severla minutes. The wifi button no longer works and does not find the various signals. If i try to use only Wifi without the sim inside the phone it works for a while but then it doesn't work again.
Sometimes the mobile reboot randomly and has abnormal battery consumption.
I noticed baseband is unknown, but if i do *#06# appear Meid, Imei1 and Imei2.
What could be the problem? i think it is a hardware problem. I did the factory reset but it didn't fix the problem. I would like to try to repair it by myself to use it as a backup phone.
Click to expand...
Click to collapse
This device is already three years old, you may have dropped or changed the original MIUI.
This is also probably a hardware issue.
If your area has a lab that specializes in XIAOMI devices, ask them to test your device. I also have MI8, and the device works great, I do not replace it, even though today there are devices with better hardware and even cheaper!
Ostians said:
Hi guys, my MI8 have some problems with 4G and Wifi. If i try to use mobile data, it stops receiving the signal and the wifi no longer works for severla minutes. The wifi button no longer works and does not find the various signals. If i try to use only Wifi without the sim inside the phone it works for a while but then it doesn't work again.
Sometimes the mobile reboot randomly and has abnormal battery consumption.
I noticed baseband is unknown, but if i do *#06# appear Meid, Imei1 and Imei2.
What could be the problem? i think it is a hardware problem. I did the factory reset but it didn't fix the problem. I would like to try to repair it by myself to use it as a backup phone.
Click to expand...
Click to collapse
Install custom kernel, fixed everything. Seems to be common issue, overheating also happens after lack of connectivity. Balaam/Canting/Sphinx all work.