Develop Bugs

anyone else hearing interference during calls?

Hi. I have the volume bug and not sure if this is related but i've noticed that I can hear interference during voice calls very faintly in the background. I'm on Vodafone and have only noticed this at home where I only get 2g coverage. I have WiFi on but dont know if thay makes a difference.
Anyone else hearing anything during calls? It's the classic cellular noises a bit like the built in radiation ringtone.

If you use wifi at home for data connection you could try the following thing.
2G gives trouble as you know...
In the phone application type *#*#4636#*#* touch phone information, set it to WCDMA only and see what happens and if it gets better with calls, maybe you lose the complete data connection and you have to put it back on where it was, I disconnects de the radio for a couple of seconds when it reconnects to the provider )
This forces not to use 2G networks, so there is no interference of this source.
Maybe it helps? it's just a thought

GrandPuba2000 said:
If you use wifi at home for data connection you could try the following thing.
2G gives trouble as you know...
In the phone application type *#*#4636#*#* touch phone information, set it to WCDMA only and see what happens and if it gets better with calls, maybe you lose the complete data connection and you have to put it back on where it was, I disconnects de the radio for a couple of seconds when it reconnects to the provider )
This forces not to use 2G networks, so there is no interference of this source.
Maybe it helps? it's just a thought
Click to expand...
Click to collapse
This will not fix anything especially as he specifically stated that he only gets 2G coverage at home

also, as I have already pointed out in another thread, that option does not stay persistent (at least in my experience)
oscillik said:
For all those people who are saying that you can force the phone into 3G only mode - I have some news for you -
It doesn't stick.
Try it yourself.
1. Go to the phone application
2. Hit *#*#4636#*#*
3. Select Phone Information
4. Scroll down until you find Set preferred network type
5. Change it to WDCDMA only (or indeed anything other than GSM/CDMA Auto PRL)
6. Now reboot your phone
It doesn't stay persistent.
Click to expand...
Click to collapse

But you don't make phonecalls over 2G are you, if you're on 900Mhz provider this will use gsm signal to make calls isn't it?

GrandPuba2000 said:
But you don't make phonecalls over 2G are you, if you're on 900Mhz provider this will use gsm signal to make calls isn't it?
Click to expand...
Click to collapse
you are incorrect - if your phone is in 2G mode (either due to forcing it into 2G mode via the settings option, or by being in a non-3G coverage area) all communications are done over 2G. This includes SMS, cellular calls, and mobile data access.

Ok, did not know this, and wanted to know.
Is this the case everywhere or a standard in mobile communications technology?
So no chance that GSM signal is stil there and works if you don't get 2G data connection?
Did not see my GSM signal drop out when 2G was available.

GrandPuba2000 said:
Ok, did not know this, and wanted to know.
Is this the case everywhere or a standard in mobile communications technology?
So no chance that GSM signal is stil there and works if you don't get 2G data connection?
Did not see my GSM signal drop out when 2G was available.
Click to expand...
Click to collapse
If you can only receive 2G connection in your coverage area, you will not be able to make calls over 3G.

Hey so has anyone else noticed this issue? As I mentioned, it's very very faint - as in you have to be in an otherwise silent room to notice. And it occurs when I have 3G too i've noticed today.
Some more detail:
The noise doesn't start as soon as the phone connects - usually a few seconds afterwards and it actually continues for a couple of seconds after i've hung up (which I've noticed if I put the phone straight back up to my ear).
Would someone else mind doing a test call in a very quiet place and letting me know?

Hi guys sorry to bump this but quite concerned that it's only my phone this is happening to. If someone wouldn't mind just listening carefully during a call (maybe to your voicemail to avoid the weirdness!) in a quiet room to let me know if they can hear interference that would be great.

So this problem frustrated me so much that I got the phone exchanged. Guess what though - same problem.
Surely someone else has noticed this - if you're in a quiet place it's both pretty loud and very distracting.
As I originally explained - after a few seconds of any call, I get a very short mute (we're talking microseconds) followed by the kind of background buzzing noise you get when you put a phone near a speaker.
Could it be down to a faulty batch?

SGH-T999 loses signal after ending a call

Hi all,
I recently discovered that my phone is not maintaining the network connection once I end a call. Whenever I end a call I can visibly watch the bars deplete. I set a numeric indicator for signal strength and I watch it go from -85 while on a call to -113. The bars at this point are completely gone and any calls made to my device go straight to voicemail.
One quirk is that I am able to reconnect, and maintain the connection with the network simply by triggering and subsequently disabling airplane mode. This of course only works until the next call has been completed, wherein the signal strength dies again.
I should mention I am running cm9 which was flashed using cmw. I've heard about the same thing happening with stock nexus devices, but was curious if anyone else has had similar experiences?
Thanks for any and all insights,

Well now this is a little strange, but I've found a way to stop the signal from being lost. All I have to do is restrict my device to 2g networks. This would normally be unacceptable, but I don't actually have a data plan as I'm a wifi only guy.
My imei was wiped when I flashed cwm using Odin, so I wonder if this may have something to do with the issue. Maybe others with borked imeis experience something similar...
I'd still like to see what others may think on the matter despite the work around.
Sent from my SGH-T999 using xda premium

A few questions about the GNex - Network, Mail etc.,

Hi Guys,
So, I've been using the GNex for about a month. I moved to this phone from a Moto Atrix and here is what I have noticed and have looked around but didn't see any good answers to these questions I am having. Hopefully I get some answers here.
Device info:
GNex GSM version on ATT.
Running JB 4.1.1 Stock with Trinity Kernel (rooted and bootloader unlocked).
Issue #1: I get really bad reception at work. But, when I leave the building, my phone doesn't automaticaly connect back to the network. Sometimes, if I don't check my phone, it's been like that all night long until the next day when I have tried to make a call and it said "No Network Available" and I have to either reboot or toggle airplane mode to get back on the network. Am I missing something? In my past experience with other devices, they try to automatically connect back to the network when they loose connectivity. Also, if I get in an elevator during a call and the call gets dropped due to network unavailability, it doesn't connect back to the network and I have to toggle airplane mode. Has anyone else had this issue?
Issue#2: This is with the stock mail app. Specifically the search in this mail app. No matter what, it always returns zero results. Has anyone had this issue with the Mail App? If I use the Gmail app, it works fine. That's what I am using now, but am curious as to what I may be missing that make it not return any search results in the stock mail app.
Q3: Speed Dial: How do you set speed dial on the dialer? Is it even supported?
thanks in advance,
vG

verruckterGeck said:
Issue #1: I get really bad reception at work. But, when I leave the building, my phone doesn't automaticaly connect back to the network. Sometimes, if I don't check my phone, it's been like that all night long until the next day when I have tried to make a call and it said "No Network Available" and I have to either reboot or toggle airplane mode to get back on the network. Am I missing something? In my past experience with other devices, they try to automatically connect back to the network when they loose connectivity. Also, if I get in an elevator during a call and the call gets dropped due to network unavailability, it doesn't connect back to the network and I have to toggle airplane mode. Has anyone else had this issue?
it could be to do with your radio, what version is it? baseband version in about phone. im no expert but when i flashed a jellybean rom i had to update my radio afterwards cause my signal was dropping alot. i also had the same problem later on but that was down to my network operator. before i realised it was them i googled my problem and a few forums suggested that my sim card was goosed. so maybe check those three possibilities? i cant help with the other two issues unfortunately but good luck sorting it out!
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Click to collapse

Why data connection lost and why reboot fixed it?

Hi,
Using GNex, stock JB 4.11, Wind Mobile Canada, $40 plan, unlimited data & Canada wide.
Please excuse in advance for the novice questions. I am not yet familiar with Wind Mobile. The customer support is too long and submitting a question to their website required around 5 days to get an answer which is generally irrelevant in my short experience. Hope some expert users here can share some of your knowledge.
Last week, suddenly during a phone conversation, the phone became totally disconnected voice & data. The next morning, the situation didn't improve, so I rebooted the phone (power off / on). Then the phone could connect to voice, but no data (gray icon instead of blue). I stayed with no data for 3 days. During that time, I tried a few reboots, changing various network settings (APN, Network Operators, Data roaming, etc.). None of that worked, then I made another reboot and suddenly everything is back to normal (no roaming and data OK).
Q1. Signal strength variation: what is the cause that makes a signal vary? For the same location, sometimes signal changes from 3 bars to 1 within a few minutes.
Q2. What caused a network to black out temporarily? That's what I got last week during the entire night. The reception icon is a black outline triangle (no voice, no data). I purposely disabled roaming, I admit a network could have some issues, but I have hard time to admit that a disruption could last 12 hours. May be the issue is my phone? It was not rebooted since 7 days.
Q3. How often should I reboot the phone? By reboot, I mean power off/on. I hope this is the correct term. Is it possible that a frequent reboot help the phone to be more responsive? I tend to think so because all the network issues I got were magically fixed by reboot.
Q4. Why would a reboot fix a data connection issue? In my case, a few reboots on day 1 didn't fix. Many network settings changes didn't reconnect data. Then finally another reboot on day 3 fixed data connection.
Thanks in advance for any help.

Welcome to the Nexus and its crap radio. Try turning off 4G, once I did that I never lost signal again. With 4G on I get disconnected from the network randomly throughout the day

SirVilhelm said:
Welcome to the Nexus and its crap radio. Try turning off 4G, once I did that I never lost signal again. With 4G on I get disconnected from the network randomly throughout the day
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Click to collapse
How to turn off 4G? Wind Mobile operates on AWS network 1700/2100 MHz (UMTS band 4), and HSPA+ for data. I believe it is not 4G. On the phone Network Settings, there is only an option "Use only 2G Network" which is not a good option for me. If I enabled "Use only 2G Network" the phone shuts off data and changes to roaming mode.

just set ur nexus on airplane mode for a second..
then disable the airplane mode instantly..
u ll gain ur net working widout reboot... )

dinglic mass
ronakmachhi said:
just set ur nexus on airplane mode for a second..
then disable the airplane mode instantly..
u ll gain ur net working widout reboot... )
Click to expand...
Click to collapse
Oh wow, that's a cool tips.
I hope someone can answers my other questions, I like to understand the "how things works" side.

2LoT said:
Q1. Signal strength variation: what is the cause that makes a signal vary? For the same location, sometimes signal changes from 3 bars to 1 within a few minutes.
Any number of influences. A microwave, air ionization, temperature, humidity, output from the tower not consistant, and plus just the variations of the phone. Going by bars is a bad way to gauge anyways, it could have only dropped signal for a split second but it doesnt update the bars frequently so it would appear to be low signal longer than it could have actually been. Your phone works by line of sight, picture a tight wire from your phone to the tower, anything that crosses in that line reduces signal.
Q2. What caused a network to black out temporarily? That's what I got last week during the entire night. The reception icon is a black outline triangle (no voice, no data). I purposely disabled roaming, I admit a network could have some issues, but I have hard time to admit that a disruption could last 12 hours. May be the issue is my phone? It was not rebooted since 7 days.
That actually is hard to answer, you would need to contact your provider to see if they have a log of an outage at that time before going into whether it was the phone or not.
Q3. How often should I reboot the phone? By reboot, I mean power off/on. I hope this is the correct term. Is it possible that a frequent reboot help the phone to be more responsive? I tend to think so because all the network issues I got were magically fixed by reboot.
Never unless things act funny. A reboot is usually healthy for operating systems (i know many do not). I personally don't intentionally reboot mine, it usually happens because I'm screwing with clock speeds
Q4. Why would a reboot fix a data connection issue? In my case, a few reboots on day 1 didn't fix. Many network settings changes didn't reconnect data. Then finally another reboot on day 3 fixed data connection.
Like any software there are chance of a 'glitch' where the modem and the driver have issues communicating. Toggling airplane mode off and then back on re-initializes this and in most cases fixes the communication problem. Rebooting will have the same effect. I would only worry if you are needing to do this often.
Click to expand...
Click to collapse
Hope this helps a little.
I would also contact your provider. They may have an issue with the tower you are connecting to.

Perfectly understood, appreciated very much your detailed answers. Can you please clarify below?
Darunion said:
Any number of influences. A microwave, air ionization, temperature, humidity, output from the tower not consistant, and plus just the variations of the phone. Going by bars is a bad way to gauge anyways, it could have only dropped signal for a split second but it doesnt update the bars frequently so it would appear to be low signal longer than it could have actually been. Your phone works by line of sight, picture a tight wire from your phone to the tower, anything that crosses in that line reduces signal.
Click to expand...
Click to collapse
Makes sense. Indeed, when I said "For the same location, sometimes signal changes from 3 bars to 1 within a few minutes". Actually, I mean a room and I was walking/moving so may be the orientation of the phone explained why the reception was inconstant.
Regarding your answer above output from the tower not consistant. Is it possible that the tower reduces its signal strength when the number of users increases? Similar to users sharing a finite band width?

Yes, even orientation of the phone can have an affect, depends how the antenna is set up inside the phone, i havent seen it so i have no answer for that.
ya, as you move around you could have been what blocked the direct sight of the tower, signal passes through nonmetal objects but each time it does, it loses strength depending what it passes through

@OP I also have the same problem, I am also with Wind and had to do force reboot to make it reboot.
Sent from my Galaxy Nexus using xda app-developers app

Flash the UGLC1 radio to your nexus. I'm with Wind as well and that radio gets me good service!

service lost every so often

hey all,
I have att on my fire phone , and every now then(atleast once a day) I lose service. It would say searching on the signal bar and it never finds it lol. I would have to restart the phone and then it reverts back to normal. is anyone else having this issue?

I'm guessing it's the fact that LTE has lower signal quality than 3G and
once you force the phone to 3G (once per reboot) it will never disconnect.
LTE is used only for data, when you make calls it will switch to 3G anyways,
so call your phone while it's in LTE and you should notice signal improve ...
To switch do this:
Same as dialing *#*#4636#*#* but this is easier to use:
play.google.com /store/apps/details?id=diewland.testing.phone
Go under Phone Info, then select 3G auto I believe, 4th down from top.
Also, contact Amazon support (right from help on your phone) if the above fixes it.
Tell them you want settings for disabling LTE added to the phone,- I did that and they
said they've submitted to developers, but I guess it's best if more people request this ...