Phones switches to 2g during call - (3G) data is disabled - Nexus S Q&A, Help & Troubleshooting

Hi everyone, I'm running Android 2.3.4 (OpenSoju Rom) on my Nexus S,
but the issue i'm going to describe has happened to me on other Roms and
even on my old Nexus One.
When the phone is idle, 3G data works great (also when using apps that
require an internet connection), but when I receive a call,
after a minute or two, the 3G icon disappears from the notification
bar and the phone data connectivity is lost - no connection to the internet.
I've asked around and someone told me it is because the phone switches to
2G network during the call and when in the phone is in 2G mode, during a call
there is no data (on a 2G network).
I know that in the past this behavior did not occur, and in my country
when in 3G during a call - data is enabled!
So does anyone know how to fix/change the setting that causes this behavior?
'cause, for me, sometimes I really need the data connection during a call,
for example, when navigating using Waze (which needs data connectivity),
and receiving a call it causes Waze to stop working and I lose my GPS direction.
Thanks.

Use to work for me too. Then i noticed when AT&T started saying the had talk and web at same time, mysteriously it started doing what is happening to you. And i have Sprint, unless you switch to at&t you might be waiting for awhile.
guys234 said:
Hi everyone, I'm running Android 2.3.4 (OpenSoju Rom) on my Nexus S,
but the issue i'm going to describe has happened to me on other Roms and
even on my old Nexus One.
When the phone is idle, 3G data works great (also when using apps that
require an internet connection), but when I receive a call,
after a minute or two, the 3G icon disappears from the notification
bar and the phone data connectivity is lost - no connection to the internet.
I've asked around and someone told me it is because the phone switches to
2G network during the call and when in the phone is in 2G mode, during a call
there is no data (on a 2G network).
I know that in the past this behavior did not occur, and in my country
when in 3G during a call - data is enabled!
So does anyone know how to fix/change the setting that causes this behavior?
'cause, for me, sometimes I really need the data connection during a call,
for example, when navigating using Waze (which needs data connectivity),
and receiving a call it causes Waze to stop working and I lose my GPS direction.
Thanks.
Click to expand...
Click to collapse
Sent from my Nexus S 4G using XDA App

Related

[Q] Data Network confilict

Hi all,
i noticed that my phone (drops/do not) receive calls if i was connected to the internet through the data plan, but it works just fine if i was connected through WiFi, any ideas?
PS: i changed many radios but still the same.
When the calls fail, is the phone is on 2G mode or 3G mode?
i was having a bad reception on 3G so i switched to GSM Only option.
blackrose157 said:
i was having a bad reception on 3G so i switched to GSM Only option.
Click to expand...
Click to collapse
That could be the problem - as 2G does not allow data and voice/text at the same time, could be that because data is active, calls are being dropped. Try disabling data for a while and see if the problem goes away.
yes that is correct, when the send & receive bars of the data is blinking i cant receive calls, otherwise i can receive calls with no problems.
i will try to switch back to 3G and test how it's gonna work.
thanks for your help.
No problem. I had this problem a lot before on my HTC Legend using the stock ROM. While on 2G mode, people would tell me my phone would keep going to voicemail even though I had full reception, and sometimes I would receive texts really late. It was very annoying as I never had the problem previously on Nokia phoens.
However, since switching to CyanogenMod on the Legend, and also on the Desire S, I haven't noticed the problem as much.
Have the same problem on same carrier,
Sometimes, an SMS notifies me that someone has tried to contact me with no success !!
I thought this was carrier related, but never thought this is 3G/2G radio problem on stock ROM!!
Will give the "GSM Only" option a try and will report back.
Thank you all !!!

[Q] Wifi Calling Issues

I am having an issue with wifi calling on a my One S. For background info I am using a completely stock rom, I am rooted and I have only removed non t-mobile related apps like where's my water and movie editor.
My issue is this, I have wifi calling disabled in settings and yet every time I connect to a wifi hotspot whether at home or anywhere else it attempts to use wifi calling. when it does this I lose all cellular signal and can no longer receive/send calls and texts. I have tried factory resetting the phone as well as calling t-mobile. I was on the phone with them for about 2 hours or so last night and still no fix. Just curious as to what I should do to fix this issue or would it be easier to just get an exchange on the phone.
I have also tried setting up wifi calling but at the same time I would prefer to use my phone connection for calls due to irregularity in hotspots i connect to, hence the reason I have it disabled altogether.
Any help is appreciated
Try setting wifi calling to cellular preferred
Sent from my HTC VLE_U using XDA
Yeah that doesnt seem to help either. I am just about to take phone back and try another. I hate not being able to use my phone my WiFi. No matter what setting I use I can't seem to send or receive any calls or texts. The instant my WiFi connects I get a big X on my cell signal indicator.
Sent from my HTC VLE_U using xda premium
ktt4510 said:
I am having an issue with wifi calling on a my One S. For background info I am using a completely stock rom, I am rooted and I have only removed non t-mobile related apps like where's my water and movie editor.
My issue is this, I have wifi calling disabled in settings and yet every time I connect to a wifi hotspot whether at home or anywhere else it attempts to use wifi calling. when it does this I lose all cellular signal and can no longer receive/send calls and texts. I have tried factory resetting the phone as well as calling t-mobile. I was on the phone with them for about 2 hours or so last night and still no fix. Just curious as to what I should do to fix this issue or would it be easier to just get an exchange on the phone.
I have also tried setting up wifi calling but at the same time I would prefer to use my phone connection for calls due to irregularity in hotspots i connect to, hence the reason I have it disabled altogether.
Any help is appreciated
Click to expand...
Click to collapse
This problem is stupid but is easy to fix. Whenever you finished using wifi calling feature, the phone's radio is auto-turn off. That why you can't call or send text message. Open dialer pad, type *#*#4636#*#* ==> phone information => turn on radio. I believe this is a bug because i never have this problem before when i used htc sensation,mytouch 4g

Wifi Calling/SMS over wifi --issues and solution.

I have had a crazy time both with wifi calling remaining connected (suffered sudden drops), and further SMS over wifi seemed spotty at best.
Part of this was caused by either a bad SIM card, or deletions of stock apps and/or services...which now have been fixed.
At the moment everything is working fine. Don't know if this will affect anyone, but I thought I would just add to the library of knowledge.
First, once I got wifi-calling working (meaning the status bar icon was no longer red), I started to read the log files and realized that every time the wifi was reset, wifi calling would not consistently restart.
What I have realized is that wifi-calling and SMS are dependent on TMOs mobile network via wifi. However, any internet connection is simply that...and any apps you have like FB or Google Voice will work with that wifi internet connection. Conversely,the TMO wifi-calling service/app either connects on a different layer (such as the IP layer) or uses some unusual node-based connection to traverse the 802.11 frequency, over your ISP's and other networks to arrive at the TMO servers which then are linked into the mobile network. You can see this by downloading an app that triangulates and provides tower locations nearby or gives you other mobile network data (i.e., CID, etc)... That data is either not decipherable by the app trying to get this data, or one gets unusual info when compared to non-wifi calling. Bottom line is that there are two separate signals being carried by the wifi: "data" and "mobile wifi calling" and they are completely different.
Another example of proof: if you are having difficulty with SMS using your wifi internet connection, try sending the SMS via Google Voice. If you have an internet connection, it will go through immediately. But regular SMS has problems if wifi-calling is not working correctly.
And one of the biggest culprits of this is wifi fixer or other similar wifi connection apps. Although it's only a guess, the "scan" these apps do are likely a simple ping to determine status of the DATA connection.
I shut off wifi fixer (but left it as a widget to use as needed), and I have perfect wifi calling and SMS.
Whatever criteria wifi fixer apps use when deciding to reset or reassociate the wifi connection is not reflective of the integrity of your connection using wifi calling. In fact wifi calling may partially interfere with your data connection which will typically trigger a reset by wifi fixer.
From now on, if I am planning on simply surfing the web and my wifi signal is less than optimum, I will turn on wifi fixer. Otherwise it just tears down wifi calling connection.
Hope this is of use.
Syntropic
Sent from my HTC One-S (rooted), stock ROM
Thanks for sharing your experience. I have an issue where over time Wifi calling disconnects even though wifi is still working. I have to re-toggle wifi to get Wifi calling back. It's very annoying.
Talk to NRGZ28... I think Energy ROM had a fix for that I'm the Amaze 4G Energy ROM
Sent from my HTC VLE_U using xda premium
syntropic said:
I have had a crazy time both with wifi calling remaining connected (suffered sudden drops), and further SMS over wifi seemed spotty at best.
Part of this was caused by either a bad SIM card, or deletions of stock apps and/or services...which now have been fixed.
Sent from my HTC One-S (rooted), stock ROM
Click to expand...
Click to collapse
Although there have been occasional exceptions, it's unusual for a wifi call on my H1s to last longer than about a minute before dropping off/disconnecting. When this happens, the call time counter changes back to say "Dialing." Of course, there is no dialing, just dead silence. There are no other signs of a problem, no error messages, no indicator icons, etc. On the same wifi network I can make long uninterrupted calls with our older MyTouch 4G - no issues at all with wifi calling.
I'm running unrooted, locked, stock ROM (for now). I don't think I've removed any apps and I think the only wifi-related app I've used is Wifi Analyzer. Could you offer suggests on how to debug this? The firmware update didn't give any improvements. Should I ask Tmo to provide a new SIM card?
Thanks -
esnittle said:
Although there have been occasional exceptions, it's unusual for a wifi call on my H1s to last longer than about a minute before dropping off/disconnecting. When this happens, the call time counter changes back to say "Dialing." Of course, there is no dialing, just dead silence. There are no other signs of a problem, no error messages, no indicator icons, etc. On the same wifi network I can make long uninterrupted calls with our older MyTouch 4G - no issues at all with wifi calling.
I'm running unrooted, locked, stock ROM (for now). I don't think I've removed any apps and I think the only wifi-related app I've used is Wifi Analyzer. Could you offer suggests on how to debug this? The firmware update didn't give any improvements. Should I ask Tmo to provide a new SIM card?
Thanks -
Click to expand...
Click to collapse
Well the first thing I would suggest is a factory reset. This being the most simple option given your phone is not rooted and on stock. The strange part of this is the "Dialing" instead of the normal keypad (which typically reverts when a call is disconnected).
As far as a SIM card, do you ever get any SIM card errors? Like "ER05" or "REV99"?
These are typically the errors of faulty cards or a bad wifi signal. Check out an app called Network Signal Info....it will tell you the strength of the wifi signal compared to the mobile network (although its not always reliable).
Let me know what a factory reset does. All of your apps will be restored by google (and their are apps to modify this restore as well).
Sent from my HTC One-S (rooted), stock ROM
syntropic said:
Well the first thing I would suggest is a factory reset. This being the most simple option given your phone is not rooted and on stock. The strange part of this is the "Dialing" instead of the normal keypad (which typically reverts when a call is disconnected).
As far as a SIM card, do you ever get any SIM card errors? Like "ER05" or "REV99"?
These are typically the errors of faulty cards or a bad wifi signal. Check out an app called Network Signal Info....it will tell you the strength of the wifi signal compared to the mobile network (although its not always reliable).
Click to expand...
Click to collapse
Didn't reset yet, want to test a little more.
I've never gotten a SIM card error. The unexpected "Dialing" with the End Call button still showing is the only indication something is off.
Tonight I ran a few tests calling between our 2 Android phones in the same room, same wifi. 3 calls 1S to MT4G: 2 were perfect and lasted several minutes, while the middle call disconnected after less than a minute. 3 calls MT4G to 1S: all 3 went directly to voicemail, the 1S didn't even ring. Now I recall that's been a complaint before - that calls to me go straight to voicemail when I've been on wifi calling.
esnittle said:
Didn't reset yet, want to test a little more.
I've never gotten a SIM card error. The unexpected "Dialing" with the End Call button still showing is the only indication something is off.
Tonight I ran a few tests calling between our 2 Android phones in the same room, same wifi. 3 calls 1S to MT4G: 2 were perfect and lasted several minutes, while the middle call disconnected after less than a minute. 3 calls MT4G to 1S: all 3 went directly to voicemail, the 1S didn't even ring. Now I recall that's been a complaint before - that calls to me go straight to voicemail when I've been on wifi calling.
Click to expand...
Click to collapse
Are you sure wifi-calling is on? Do you have the blue icon in the status bar?
Sometimes this isn't on, even though wifi is on and you are making a call.. Not sure if that is intentional or not.
Just in case... The switch is in settings> more (under wireless and network buttons)
Sent from my HTC One-S (rooted), stock ROM
syntropic said:
Are you sure wifi-calling is on? Do you have the blue icon in the status bar?
Click to expand...
Click to collapse
Yep, it's on.
Just to be clear, the H1S has received calls when wifi calling is on, it's just sometimes that they go directly to vm. For example, as I'm typing the phone just received a wifi call and is handling it fine, hasn't dropped after 3 minutes.
NO CONSISTENCY, BUT USUALLY DOESN'T WORK.
A factory reset did not fix the problem.

(not so) random gsm signal loses

Hi everyone,
i did some search on this subforum in order to avoid double topics but nothing found.. so here it is:
i (and many other n5 owners) have gsm signal drops either at random times or specific actions like after receiving a text in hangouts or after receiving a call.
by lockscreen and by quick access toggles box, it displays "emergency calls only" BUT gsm signal meter stays untouched SO something is very wrong.
another strange thing is that hspa /edge data continues flowing and in my case i'm able to receive other texts even if i cant send or call..
a quick but annoying fix is by toggle airplane mode which instantly makes gsm work again.
googling this problem i've read i'm not the only one.. it seems carriers' dependent (not sim) and in my case it affects Tim Italy carrier. gonna try other carrier's sims though..
anyone of you have this problem too? any solution? any suggestion? i don't think RMA would solve the problem, just because it seems a very very common problem among specific carriers (like canadian Rogers for example)
thanks for replies
slow reaching signal
What i have noticed is that, in my office there is no signal, when i go out of the office it takes much time to automatically take the signal , i'm talking of something like ten minutes...
What I did this morning was go into mobile networks under settings and change the APN from the WAP setting which my phone had by default, to the option that says att phone. I no longer see the H but now its just the LTE appearing (not completely clear on specific differences but I know it matters to some folks) but my signal has yet to drop to "emergency calls only" like before.
Sent from my Nexus 5 using xda app-developers app
Shaul305 said:
What I did this morning was go into mobile networks under settings and change the APN from the WAP setting which my phone had by default, to the option that says att phone. I no longer see the H but now its just the LTE appearing (not completely clear on specific differences but I know it matters to some folks) but my signal has yet to drop to "emergency calls only" like before.
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
this problem is kinda diffused.. maybe regards more or less apns and carriers.. so strange..

OPO - Data usage (Cellular) restrictions for calls and data separately

Hi Guys,
I am here with a..I hope possible to solve situation.
I have switched to our local carrier, which provides only 2G and 4G connection, but... I have 1GB of data for 4G, but my OPO is sometimes switching to EDGE, which makes me fury, because I am paying for anything transferred through 2G (separately as it is not in the data package I have), but all calls are on 2G, which makes restricting the connection to "LTE-only" impossible, becuase it would result in no access to the calls/text messages.
I have found this article
http://editorsean.com/articles/how-to-force-three-to-use-3g-and-4g-only/
which is really great, but with those options I am forced to use GSM/LTE and such..
Is there any chance of letting my calls and text messages just using 2G network as usuall, but forcing my internet access using just LTE ? There is of course an option for disabling "national roaming" (I hope, it is called the same in english), I have it disabled, but it is still connecting to the 2G and draining data from it...
Is there a chance it is a problem from my side ? I did not factory reseted the phone since buying, doing just OTA upgrades and such, so I was thinking, if the system is not kind of bloated...I had some weird things happening with it too in the past - recently I have seen that in the battery saving mode I could see some like various screen brightness jumps while playing a game for example.

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