Develop Bugs

[Q] Strange Arc S signal / battery drainage problem

I bought myself Arc S, it came loaded with .62 firmware. On my initial run, battery ran for about a day, later on for two or maybe even three days. Then I started to work in another country. As far as I remember, battery life was the same, even though the network was not (where I work now is 2G only, in my home country 3G). Then one day messed around with a Xperia S apps, did a stupid mistake and started to get force closes with launcher. I had to repair software.
Since the software reinstallation, my battery life degraded to less than a day without even touching it. Therefore I installed Battery Monitor Widget, to see, what is going on. I noticed, that battery drainage is about 70-110 ma in average, as far as I know, it should be much lower (under 30ma?). I have to say, that I tested this with .62, .42 firmware and it's all the same. When I turn phone to airplane mode, energy consumption lowers to under 5ma - which is normal i guess.
It began to bug me even more, as we bought small alarm clock with radio. I noticed, that when this alarm clock is on, despite from 2 other phones our room, my Arc S is the only phone, which makes this kind of searching-for-signal or calling speaker interference (noise coming out of speaker). My phone does that all the time, even in idle mode. This can be also heard when we have our TV on on. So, if I don't want to hear that, I have to unplug the alarm clock or put my phone into airplane, which sucks.
I asked a guy next building, if he has the same problems with Arc S, and he says that his phone can live up to 5 days with one charge (is connected to the same network provider), so I guess it is not network related?
I wonder, is there a possibility, my phone's radio is broken somehow? Or it was faulty, and firmware reinstall somehow broke it to the end? So that is draining battery all the time - looking for signal? Any way to fix this? Flashing different base bands did not help, tried that already...anybody knows a fix for this, apart from returning it to my provider - since I'm 4 months away from my country
Anybody heard for any similar problem with Arc S?
Thanks in advance! (if needed, I can also post battery usage screenshot, but I think it's not much of a help)

lyteo said:
Then I started to work in another country. As far as I remember, battery life was the same, even though the network was not (where I work now is 2G only, in my home country 3G)
Click to expand...
Click to collapse
That seems like the issue here if I'm understanding you correctly. If you don't have 3G service where you currently are, and you did not turn off 3G, your phone will constantly try and find a 3G signal.
Airplane mode fixing the issue makes this seem even more likely. Try disabling 3G and see if it helps.

Problem is, that's what I did almost instantly when I came here, I set it to GSM only. One thing I noticed right now, when I check into About phone, under Mobile network type, my Arc S has: UNKNOWN, where my friends HTC says EDGE. Maybe here lies a problem? Why my phone can't detect network type?

Incredibly, I found the reason for my drainage and signal search. When I came into that country where I work now, my provider offered me to turn off data transfer (provider turns it off for me). Of course I did not want any unintended data transfer, so I turned it off by sending sms to service number. After I reinstalled software (that was my first reboot here), phone couldn't find network type for that reason, and was searching for it all the time. Yesterday I allowed data transfer by sms again, phone found EDGE network, can't hear any more noise on our alarm clock and battery drainage is about 4% per 8,5 hour. Excellent
I hope this helps anyone out there with drainage problems.

I think you can also turn off/disable data transfer/traffic with the Data traffic widget, if you want to avoid using data.

xperia arc s
hold up, i dont understand. so im pretty sure i have the same problem. get about 17 hours with berely using my phone on any rom/kernal/firmware. even with data turned off, betterbatterystats shows 'noor unknown signal' and 'no data conection'? i sued to able to get 3 or more days out of my phone??

I think there is an application, which might be keeping the phone alive.

dout it, still drains after a complete rom wipe

[Q] wifi problems

I am out US on wifi only and there are a few issues i noticed. Im wondering if anyone else has the same problems.
1) If the phone is restarted it shows a full 4 bars when connected to wifi. Once the phone goes to sleep and has been sitting for a while then when I unlock the screen it says I have one bar and it performs that way. Toggling the wifi on and off has no effect the phone must be restarted to get the signal back strong.
2) The wifi reception overall generally seems weaker on my G than on other devices. In certain areas wife's Galaxy SII and my iPad both have signal of 2 bars and the G has nothing plus my G keeps disconecting from the wifi.
3) Power saving mode when the phone is down to the last 30% it turns off the wifi and turns on the LTE. Shouldnt it be the other way around!
Thx,
Mark

[Q] Why am I getting battery problems with GS3?

So here is the problem. My phone drains battery when there is nothing that is supposed to be draining it. In my house I have 4 bars reception (Max Reception) and wifi on or LTE. After using it for a bit and then closing all apps and shutting the screen. My phone starts its "heat mode", starts heating up. about 1 percent every 2 mins. I have tried stock, custom roms, and factory restoring and still nothing. I have had this problem for months now. Should bring it to my carrier company to fix it? Or is there another thing that's affecting it?
For the screenshots it starts off normal over night then it after use it declines.
EDIT: Problem on stock, stock rooted, carbon, hyperdrive, intergalactic

This does not sound like normal behavior. I'd use factory warranty and get a replacement.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Have you checked under settings / battery to see if anything is running high? Also check settings/applications and slide over to processes. Is it possible it is the media scanner? If so it could b a corrupted file possibly left behind from a theme or bad picture. You should be able to back up what you need from internal SD and do a factory reset from the settings. I accidently erased my external SD so use caution and read all it is asking. You shouldn't need to take it back yet.

Get Better Battery Stats and see if you can track down the wake lock that is killing it. It looks like from the last picture that once wifi was turned on, it experienced a hard drain.
Honestly, my phone does the same thing from time to time and I am still trying to figure out what it might be. In the interim, a reboot always fixes the problem.

I would warranty the phone. But just out of curiosity have you tried a different radio? Are you on the most up to date radio for your carrier? Also have you tried rebooting after the plummet starts and if so does it fix it for a while? I know that some postings have noted a problem with the LTE switch when on a phone call. I know that when I have LTE on and make any phone calls, at some random time over a few days it will happen to me until I reboot. If I keep LTE off, it does not happen. I am not saying this is your issue, but I am just trying to narrow the possibility.
Sent from my SAMSUNG-SGH-I747

Well thanks guys. Im going to send my phone back to my carrier. i think its antenna problems so i might get a replacement

3G and signal problem

Hi
i had a problem with 3G + Signal< Suddenly after using no signal and no 3G "Data" so i have to restart my note8
it happen to me after 2 days or sometime 3 Days after the incidence
any suggestion
thanks

No signal
By “no signal”, did you mean Flight mode? Check in the “Settings>About device>Baseband version”, what it states?

N5100XXBMC8
it usually happen when i hang out from a call
the problem happen now twice a each day

Question Poco F3 mobile data and wifi drop randomly

Hi, I have a brand new Poco F3 6GB/128GB running on MIUI 12.5.6.0 Global Stable, and sometimes wifi and/or mobile data drop randomly.
I was just walking home about 30 minutes ago while playing Clash Royale on mobile data, had full signal bar and was on 4G+, then suddenly it lost internet access, 4G+ symbol disappeared, but the full bar of signal still remained for a few seconds before going out of signal, and then suddenly I have full signal bar and 4G+ again. Loss of connectivity lasted for about 15 to 20 seconds.
This happened in a place where I always had 100% coverage, full bar of signal and 4G+ on any phone.
I am using only SIM1, the second slot is not being used.
It has also happened twice on wifi, and on both occasions I was also playing Clash Royale while laying on my bed, then suddenly wifi drops and takes about 5 to 10 seconds to reconnect. I usually get 'Good' signal strength in bed, sometimes at 260Mbps and sometimes at 585Mbps, every other phone I had could maintain a wifi connection to my AP from bed.
Is anyone else having random connectivity drops?

It can be related to: https://forum.xda-developers.com/t/random-reboots-while-using-lte-in-aosp-roms.4330991/
and: https://xiaomi.eu/community/threads/poco-f3-12-5-6-loses-gps-signal.62828/
(Same issues)
and unfortunately no fix from xiaomi..

I will be able to unlock the bootloader in about 24 hours, if the .eu ROM does not fix this issue I will return the phone on Monday.

wall_ said:
I will be able to unlock the bootloader in about 24 hours, if the .eu ROM does not fix this issue I will return the phone on Monday.
Click to expand...
Click to collapse
In which region are you if I may ask?

nahsha said:
In which region are you if I may ask?
Click to expand...
Click to collapse
Portugal

wall_ said:
Portugal
Click to expand...
Click to collapse
I have a bug ticket submitted to Xiaomi, it's just a matter of time (hopefully) till they provide the modem crash fix! Can you force your mobile to 3g, and see if you can reproduce? I bet you can't..just to confirm that we're having the same issue.

nahsha said:
It can be related to: https://forum.xda-developers.com/t/random-reboots-while-using-lte-in-aosp-roms.4330991/
and: https://xiaomi.eu/community/threads/poco-f3-12-5-6-loses-gps-signal.62828/
(Same issues)
and unfortunately no fix from xiaomi..
Click to expand...
Click to collapse
Haha I'm currently very curious whether Xiaomi did such "kernel hack" as well, which just resets the modem rather than forcing the whole system to reboot.
I'm currently on LineageOS with custom kernel, which implements such "kernel hack". To me at least random connection loss is much less bad than random sudden system reboots.
wall_ said:
Hi, I have a brand new Poco F3 6GB/128GB running on MIUI 12.5.6.0 Global Stable, and sometimes wifi and/or mobile data drop randomly.
I was just walking home about 30 minutes ago while playing Clash Royale on mobile data, had full signal bar and was on 4G+, then suddenly it lost internet access, 4G+ symbol disappeared, but the full bar of signal still remained for a few seconds before going out of signal, and then suddenly I have full signal bar and 4G+ again. Loss of connectivity lasted for about 15 to 20 seconds.
This happened in a place where I always had 100% coverage, full bar of signal and 4G+ on any phone.
I am using only SIM1, the second slot is not being used.
It has also happened twice on wifi, and on both occasions I was also playing Clash Royale while laying on my bed, then suddenly wifi drops and takes about 5 to 10 seconds to reconnect. I usually get 'Good' signal strength in bed, sometimes at 260Mbps and sometimes at 585Mbps, every other phone I had could maintain a wifi connection to my AP from bed.
Is anyone else having random connectivity drops?
Click to expand...
Click to collapse
I'm curious what your dmesg will look like, although I'm not a dev myself.

nahsha said:
It can be related to: https://forum.xda-developers.com/t/random-reboots-while-using-lte-in-aosp-roms.4330991/
and: https://xiaomi.eu/community/threads/poco-f3-12-5-6-loses-gps-signal.62828/
(Same issues)
and unfortunately no fix from xiaomi..
Click to expand...
Click to collapse
Although I'm also a victim of random modem crashes (and initially it's not only modem crashing, it's the whole system was forced to reboot, until I found the "kernel hack"), honestly I'm not sure whether all these "random signal drop" "random reboots" issues share one common root cause at all. I have no idea it's a software issue (no matter it's kernel driver, firmware, or even some userspace stuff) or a hardware one either.
Besides, wifi and cellular belong to different subsystems, if I'm not mistaken? To be honest I haven't noticed system reboot triggerred by reasons other than "esoc0" (which should be cellular, not wifi?) myself.

I'm using Poco F3 on T-Mobile here in the valley in Southern California. I manually enabled VoLTE and Wi-Fi calling. I have my SIM card in slot 1. I'm on MIUI Global 13.0.2 Stable. Everything is working great, but when I drive to certain low signal areas, the phone switches to 4G and will not switch back to showing VoLTE 5G in the status bar even when I'm back to a great signal area. I have to use airplane mode, or toggle VoLTE setting off and back on to get it to switch back to 5G with VoLTE working again. Any idea if there's a way to permanently fix this issue? I don't know why it switches to 4G and never switches back! Is this possibly related to the modem crashing bug discussed on this thread? I love the phone but this bug is very irritating!

Hello. Im having the same issue. Were you able to fix the issue?