Database Develop

[Q] Signal Issues

I have been having intermittent signal problems on my phone for several months now and it's extremely frustrating. I've read through quite a few threads trying to find a similar problem, but nothing seems to provide a solution. So here goes my feeble attempt to explain what's going on...
For starters, I am in Canada on the Telus network. The phone works fine when I am traveling between places but doesn't work at all whenever I am at work or at home. Other places seem to knock it out as well. It hasn't worked at work since I started having the connection problems back in February or March. The same goes for at home. Anytime I am in between the two, which is a five minute drive I can switch the airplane mode on and off and it will usually connect to the network. When the Network drops, I still have signal bars, but get the "emergency calls only" instead.
I am running CM 7.0.3, and have updated the radio to 5.08.00.04 as well as 5.12.00.08 both did not to anything(I am now back on .08). I was on CM 6.1 when the problems started, and have been updating through the release candidates up to the latest stable CM still with no luck on figuring out what is causing the problem. I have done full wipes, as well as installed different ROMs trying to find what's causing this.
Could the SIM card be the culprit? Even if it seems to work fine some of the time?
I'm completely out of ideas, and sick of not being able to use my phone, as an actual phone, while I'm at home or at work. Any suggestions or ideas/questions is appreciated to figuring out what is going on, I'll answer the questions as best I can.
Thanks,
Chad

I'm having the exact same problem as you: only "Emergency Calls" at places with thick walls (is that well said?), where I used to have good reception and where others (with same company) have a pretty decent signal. I really don't recall when this started, but also does occur with all radios and kernels I've tested so far.
I'm currently running CM 7.0.3 with radio 5.12.00.08 and kernel redstar 2.6.38.7-CFS.

Me three. I think its something to do with cyan 7 because its been since I went onto it that signals not been what it used to. Perma emergency only in my halls.

Loosing randomly 3G or telephone signal

Hi all,
Since about 1 year i'm a happy owner of the Galaxy Note. As the stock rom was quite crappy (eating battery like crazy) I decided to swap it with a CM10.0 flavor (Cookies & Cream).
Well, installing the ROM went fine and the phone worked great, except one thing.
Since the beginning that i'm using custom roms on this phone, i'm randomly having issues with the telephone or 3G signal. As I thought, maybe the ROM is full of bugs, I wiped the phone and installed the official CM10.0 ROM. Unfortunately that solved not my problem. Since a couple weeks ago i updated to CM10.1, and still having this issue.
However, some issues where solved since the last upgrade:
- First ROM (CM10 flavor, Cookies & Cream): randomly dropping the signal, and asking for a SIM pin. Sometimes even a restart was needed
- Second ROM (Official CM10): same as above, but less issues with the SIM, mostly signal related
- Third ROM (Official CM10.1: SIM issue gone, however the phone is sill loosing the data signal + sometimes even the telephone signal (restart needed).
When I loose my signal, something it's just the data connection (3G/H). The strange thing is that most of the time that this happens the data connection or telephone signal restores when I enable/open the screen by using the side/home button. Well, that's very strange as I have no power saving apps or something like that running.
But unfortunately this is not always the solutions. Usually 1x per 2 days I have to reboot the phone in order to bring the signal for telephone + data back alive.
SIM has already been replaced, with no luck. I did install this ROM on another phone (from a friend) as well - which had in the beginning the same issues, however things seems to be become stable (haven't heard him anymore)
I already tried different modems on my phone (XXLSA / XXLSX, currently using XXLSO), but none of them solved this loosing data/telephone signal.
It starts to drive me crazy, as I use this phone for my work too.... being unreachable is quite annoying
Anyone an idea what goes wrong here, or how I can find out why this phone is going nuts?

Nobody that could explain why my phone is having this behavior?

liteonit said:
Nobody that could explain why my phone is having this behavior?
Click to expand...
Click to collapse
+1

[Q] 10.2 Network and MMS problem

I've been steadily upgrading my GF's phone with Albinoman's builds and they have been working great! However, going to the September 17th build caused a very large drop in network signal strength. She still gets 4g, but its only ever 1 or 2 bars. Mobile data is sporadic at best. Also, the battery drain has been really bad on this build, and I'm assuming it has to do with the signal strength (if its unrelated I'll deal with it separately. Haven't looked at that yet as the signal is the major problem).
The other problem is that she cannot send MMS anymore. I don't know if that is related or not, but if I'd figure I'd toss it out there.
What I've done:
* 2x Reflashed the 9-17 build, and flashed the kernel using ADB. This was a factory restore before the reinstall. (S-On)
* Tried to re-do all of the APN's based on numerous websites that list AT&T APN information. Many of them just caused further problems, so I'm back to defaults (default,supl,mms @ mmsc.mobile.att.net)
* Investigated http://forum.xda-developers.com/showthread.php?t=2348361 (as per the FAQ), but it looks like that is for a different phone entirely so I wanted to get opinions before I looked into flashing a RIL.
I'm open to suggestions at this point, and if people think its important I'm sure I can re-do more of what I've already tried. Thank you all for any suggestions or assistance!
It's an AT&T Network Phone by the way.

Guyanthalas said:
I've been steadily upgrading my GF's phone with Albinoman's builds and they have been working great! However, going to the September 17th build caused a very large drop in network signal strength. She still gets 4g, but its only ever 1 or 2 bars. Mobile data is sporadic at best. Also, the battery drain has been really bad on this build, and I'm assuming it has to do with the signal strength (if its unrelated I'll deal with it separately. Haven't looked at that yet as the signal is the major problem).
The other problem is that she cannot send MMS anymore. I don't know if that is related or not, but if I'd figure I'd toss it out there.
What I've done:
* 2x Reflashed the 9-17 build, and flashed the kernel using ADB. This was a factory restore before the reinstall. (S-On)
* Tried to re-do all of the APN's based on numerous websites that list AT&T APN information. Many of them just caused further problems, so I'm back to defaults (default,supl,mms @ mmsc.mobile.att.net)
* Investigated http://forum.xda-developers.com/showthread.php?t=2348361 (as per the FAQ), but it looks like that is for a different phone entirely so I wanted to get opinions before I looked into flashing a RIL.
I'm open to suggestions at this point, and if people think its important I'm sure I can re-do more of what I've already tried. Thank you all for any suggestions or assistance!
It's an AT&T Network Phone by the way.
Click to expand...
Click to collapse
The FAQ is just a reference guide... Don't flash anything thats from another phone or youll brick your phone
Try what the other people tried a few posts ago . Look in the cm10.2 thread for it. it has to do with editing the build.prop
Send an mms to yourself first then try to send it to other people

My second N6, the same problem

I bought the Nexus 6 (blue, 64gb) the day one, in November and since that day I noticed random reboots in a particular situation. When I switch to a WiFi network to another it shuts down and so I have to turn it on. When it turns on I have lost all my WiFi networks configurations, so passwords, dhcp settings, etc.
Random reboots rarely happen also in camera/gallery apps.
I tried to send it back to google and I received a new nexus. The first one was produced in June 2014, the new one in December 2014. The issue is still there. [emoji17] I've also tried to update to 5.1 but no resolution.
I have rooted, installed twrp, decrypted both my nexus 6 with toolkit.
How can I solve the problem? I was very happy with this phone.

Try using it completely stock and see what happens. I'd say chances are that if you set both up the same, it's something you're doing and not the hardware on 2 different phones.

But other people have made the same basic mods on their nexus and their phone has not this kind of issue.

Is it every network? Maybe try a stable custom ROM to see if it happens there too. Could be a problem with specific networks or even apps. Troubleshooting is the key. First try full wipe, no restored Apps.

I could be as simple as an app the developer has not updated since gingerbread or something stupid like that.

Is there a way to find the malicious app?

There definitely *was* a bug causing loss of wifi networks, and I think there may also have been a reboot involved there (not sure if we rebooted it manually, or if it just did it on its own as a response to a wpa_supplicant crash...). It was across the board for Android 5.0 though, not limited to Nexus 6. I saw my wife's Nexus 5 do it once. Never actually had it happen on my 6.
I'm not sure if this bug was fixed or not, since it wasn't something we tried to reproduce, and only happened once. The bug is definitely related to wpa_supplicant, since that is the only program that actually interacts with its configuration file (which is where the wifi configurations are actually stored).
As far as galleries go, you're not giving much to guess by. I certainly haven't seen galleries cause reboots like that. Maybe you are using a bad one?
Try this gallery; https://github.com/lbdroid/Android-Binaries/blob/master/Gallery2.apk
That is the actual AOSP gallery, modified to install as a standalone application. The source code is in another repository on my github.
*note: it will not do you any good at all to swap out your phone, since there is no indication that you are experiencing a hardware issue.

But why other people doesn't experience this problem that is related to WiFi? All people use WiFi and every time. Is there a way to fix the WPA_supplicant issue? Maybe a custom ROM?
My first n6 had also an hw issue, I think, because before it rebooted it gave me some little "buzz" from the top speaker.

mouse100 said:
But why other people doesn't experience this problem that is related to WiFi? All people use WiFi and every time. Is there a way to fix the WPA_supplicant issue? Maybe a custom ROM?
My first n6 had also an hw issue, I think, because before it rebooted it gave me some little "buzz" from the top speaker.
Click to expand...
Click to collapse
all people use WiFi is an incorrect statement. you can say most ppl use wifi, but all would never happen. I hate using WiFi and NEVER use it except when its absolutely necessary. ive probably used WiFi 2 times on my n6 since getting my n6 in November, and there's no WiFi issues here.

mouse100 said:
Is there a way to find the malicious app?
Click to expand...
Click to collapse
Yes, start with stock and install a few apps at a time until you get the problem. Given the fact that you have 2 different phones experiencing the same problem, it is much more likely that it is something software related rather than hardware (though I suppose it could be possible if you're really unlucky ).

mouse100 said:
But why other people doesn't experience this problem that is related to WiFi? All people use WiFi and every time. Is there a way to fix the WPA_supplicant issue? Maybe a custom ROM?
Click to expand...
Click to collapse
You said that it happens when you change from one wifi network to another. Most people don't do that. Most people have one wifi network at a time and don't change it.
There is also a huge difference between wifi network configurations... A/B/N/AC, frequency, bandwidth, multiple-bands, encryptions, etc.
My first n6 had also an hw issue, I think, because before it rebooted it gave me some little "buzz" from the top speaker.
Click to expand...
Click to collapse
Normal.

Ongoing 3G issues with Galaxy S3 mini

Hello guys,
For the past year or so I am having intermittent problems with my 3g connection. It just loses the connection with the mobile internet without any error messages and the only way to fix this is rebooting the phone. At first it happened every couple months but the intervals between connection losses seems to get shorter. The last few months it was every 10-14 days, now it's every 5 days. Since a reboot seems to fix this I don't think there is a physical defect on my 3g chip but the shortening intervals are somewhat worrying. I checked my APN settings multiple times and I've called my carrier's tech support several times but they too can't seem to find anything wrong with my APN settings. I'm currently using a custom ROM (OmniROM based on Android 4.4.4 with the Stagefright patch included) but this problem existed even in the original ROM so I doubt it's a kernel/driver issue. Is there anyone knowledgeable enough to pinpoint the problem or at least help me in the right direction because it's becoming a bit annoying and I dislike not being able to figure out WHY something happens. ^^"

The issue you have mentioned applied also to my phone, but it appeared for the first time after installing Omni from golden-guy. I haven't observed it on my stock rom. At the very beginning, I was able to mitigate the issue by turning airplane mode on and off. As you mentioned, the issue's frequency was increasing over time, leading to more than one signal lost per day. Airplane mode solution stopped working. I have also tried to kill (and got restarted) rild, as well as radiod - with no luck. Logs (I haven't checked kmesg) revealed nothing. I'm not sure the details of your issue, but I was loosing the whole GSM/WCDMA signal, not only the Internet access. Meanwhile, the system seemd to be looking for a network, draining my battery.
I still hope that the solution was to replace my SIM card with a new one from the operator. After that, about a month ago, the issue happened only once, and airplane mode on and off solved it. It's worth to notice, that turning airplane mode on took quite long time, about 30 seconds.
I'm having GT-I8190, Omni version 4.4.4-20151108, baseband I8190XXAMG (I'm not sure if it is distributed along with the rom, or maybe resides on different partition, and is not updated with the omni rom releases).

f_ranek said:
The issue you have mentioned applied also to my phone, but it appeared for the first time after installing Omni from golden-guy. I haven't observed it on my stock rom. At the very beginning, I was able to mitigate the issue by turning airplane mode on and off. As you mentioned, the issue's frequency was increasing over time, leading to more than one signal lost per day. Airplane mode solution stopped working. I have also tried to kill (and got restarted) rild, as well as radiod - with no luck. Logs (I haven't checked kmesg) revealed nothing. I'm not sure the details of your issue, but I was loosing the whole GSM/WCDMA signal, not only the Internet access. Meanwhile, the system seemd to be looking for a network, draining my battery.
I still hope that the solution was to replace my SIM card with a new one from the operator. After that, about a month ago, the issue happened only once, and airplane mode on and off solved it. It's worth to notice, that turning airplane mode on took quite long time, about 30 seconds.
I'm having GT-I8190, Omni version 4.4.4-20151108, baseband I8190XXAMG (I'm not sure if it is distributed along with the rom, or maybe resides on different partition, and is not updated with the omni rom releases).
Click to expand...
Click to collapse
Did you check logcat? If you didn't then logcat might show what the problem is. And your problem sounds more severe than mine. I only lose 3g but I can still call and send text messages. A problem with the simcard might be possible but it could also be a physical problem with the simcard slot though I can't say why rebooting or turning airplane mode off and back on would fix that.

Sahri said:
Hello guys,
For the past year or so I am having intermittent problems with my 3g connection. It just loses the connection with the mobile internet without any error messages and the only way to fix this is rebooting the phone. At first it happened every couple months but the intervals between connection losses seems to get shorter. The last few months it was every 10-14 days, now it's every 5 days. Since a reboot seems to fix this I don't think there is a physical defect on my 3g chip but the shortening intervals are somewhat worrying. I checked my APN settings multiple times and I've called my carrier's tech support several times but they too can't seem to find anything wrong with my APN settings. I'm currently using a custom ROM (OmniROM based on Android 4.4.4 with the Stagefright patch included) but this problem existed even in the original ROM so I doubt it's a kernel/driver issue. Is there anyone knowledgeable enough to pinpoint the problem or at least help me in the right direction because it's becoming a bit annoying and I dislike not being able to figure out WHY something happens. ^^"
Click to expand...
Click to collapse
I just wanted to confirm that I have similllar issue with 3g data connection. S3 mini with I8190XXAMG4 baseband. Stock ROM used for last few years (without any significant issues with 3g data connections), upgraded to latest CM11 20151017 from maclaw/novafusion. I noticed that there are some glitches with 3g data connections. Sometimes I need to tap few times before connection finally is being established. Funny thing is that I have second s3 mini with the same CM11 20151017 and all is OK.
I tried a lot of another ROMs; fifferent version of CM11, OmniROM (4.4.4 and 5.1.1), CM12.1 - problem remains - issues with 3g data connection. Is there any solution to get rid of this 3g data issue?

Sahri said:
Did you check logcat?
Click to expand...
Click to collapse
Yes, logcat (main, radio, events) revealed nothing but just signal drop to 0%. At that time, I didn't know about kmsg and system logcat buffer, so I haven't checked them.
Sahri said:
I can't say why rebooting or turning airplane mode off and back on would fix that.
Click to expand...
Click to collapse
Just tried this, and it helped. Usually, when something is not working, people try to turn it off and on again.
I always had rare glitches with mobile data connectivity, and turning mobile data off and on again always solved the problem. I think our problems my be hardware related. I suppose my old SIM card could have buggy software, i.e. advertising to support some newer protocol, but actually didn't. After upgrading, the phone tried to use the new advertised protocol, and got confused, or made the SIM confused.
I also know about cases, when SIM card simply died without any reason.

I used Note 2 about two years, flashed different roms and never had troubles, but then my friend used it about 3 months on 5.0.2 custom and got troubles with gsm/wcdma. My next samsung phone become our beloved i8190. Flashed it from stock to 5.0.2 CM, than 5.1.1, after month got first Cellular bugs. Tried another LP and some KK roms, my troubles with baseband became more and more frequently every day, flashed different modems, changed much settings in system.. So I was desided that it's all HW problems, and hated Samsung for such failure. But one day just tried to install Project Noble, and all this troubles gone forever. So it's just drivers, which not optimised for new Android versions. 4.1.2 mixed with old TouchWiz after fresh and clean Lollypop feels horrible, but we can do nothing with it.

f_ranek said:
Yes, logcat (main, radio, events) revealed nothing but just signal drop to 0%. At that time, I didn't know about kmsg and system logcat buffer, so I haven't checked them.
Just tried this, and it helped. Usually, when something is not working, people try to turn it off and on again.
I always had rare glitches with mobile data connectivity, and turning mobile data off and on again always solved the problem. I think our problems my be hardware related. I suppose my old SIM card could have buggy software, i.e. advertising to support some newer protocol, but actually didn't. After upgrading, the phone tried to use the new advertised protocol, and got confused, or made the SIM confused.
I also know about cases, when SIM card simply died without any reason.
Click to expand...
Click to collapse
But if it's hardware related, wouldn't you think that rebooting our phone or turning airplane mode on and off wouldn't fix it? And did you see in the logcat log if something happened before the signal drop? Sometimes events prior to the signal drop can also tell something about the cause.

Sahri said:
But if it's hardware related, wouldn't you think that rebooting our phone or turning airplane mode on and off wouldn't fix it?
Click to expand...
Click to collapse
Hardware could also have its state, which may get corrupted and reset on reboot.
Sahri said:
And did you see in the logcat log if something happened before the signal drop? Sometimes events prior to the signal drop can also tell something about the cause.
Click to expand...
Click to collapse
No relevant priori messages within more or less 10 minutes.