I have this crazy issue with my D2G. I have had a similar issue in the past with all my android phones. It was worst with my SG2. It has not really been an issue up to now with my D2G but it is getting worse.
What happens?
When I call certain numbers there is no Audio in either direction, the call timer counts up and the call is in progress, just no sound in either direction. If the affected number calls me back, the same thing happens.
Which numbers are affected?
Only other mobile numbers. Always the same numbers. Always the same result. It was just an occasional mobile number, perhaps one in a hundred, but in the last couple of days BOTH of my gfs numbers are doing this and she has 2 separate numbers one attached to a D2G and one on a Samsung flip phone.
What have I tried?
Switch between Clean stock Froyo & Stock Gingerbread. Factory Reset, Wipe Cache, Wipe Dalvik Cache. Power Off Phone. Pull Battery. Nothing makes any difference.
If I pull my SIM from my D2G and place it in any other phone, the SAME thing still happens! If I swap the SIMS between 2 affected phones and try, it still happens.
**If I pull the SIM from my D2G and place it in an old Hermes I have lying around calls work perfectly in both directions.**
What works?
Calls to all landlines and most mobiles. Calling a number from the phone using GV or Skype.
Is there any pattern to the destination numbers?
Affected phones are all different brands and carriers, no pattern identified.
Thoughts so far:
It can not be the SIM card as it works in some phones.
It can not be the System version or Radio Firmware version as I get the same issue with Gingerbread and Froyo.
It can not be the cache or any settings specific to my phone.
One of the phones must be an android device.
***Ok, in testing now I just found the problem. If I have the phone set to UTMS then there is no Audio if the other phone is also a UTMS device, but it works fine if the other phone is GSM. If I have the phone set to GSM all calls work all the time to all devices.
The issue is calls between UTMS phones.
At least now I know i can always make/receive calls if I select GSM, I still want to find a solution though.
I am on the Telstra 850Mhz UTMS network in Australia.
What happens?
When I call certain numbers there is no Audio in either direction, the call timer counts up and the call is in progress, just no sound in either direction. If the affected number calls me back, the same thing happens.
Which numbers are affected?
Only other mobile numbers. Always the same numbers. Always the same result. It was just an occasional mobile number, perhaps one in a hundred, but in the last couple of days BOTH of my gfs numbers are doing this and she has 2 separate numbers one attached to a D2G and one on a Samsung flip phone.
What have I tried?
Switch between Clean stock Froyo & Stock Gingerbread. Factory Reset, Wipe Cache, Wipe Dalvik Cache. Power Off Phone. Pull Battery. Nothing makes any difference.
If I pull my SIM from my D2G and place it in any other phone, the SAME thing still happens! If I swap the SIMS between 2 affected phones and try, it still happens.
**If I pull the SIM from my D2G and place it in an old Hermes I have lying around calls work perfectly in both directions.**
What works?
Calls to all landlines and most mobiles. Calling a number from the phone using GV or Skype.
Is there any pattern to the destination numbers?
Affected phones are all different brands and carriers, no pattern identified.
Thoughts so far:
It can not be the SIM card as it works in some phones.
It can not be the System version or Radio Firmware version as I get the same issue with Gingerbread and Froyo.
It can not be the cache or any settings specific to my phone.
One of the phones must be an android device.
***Ok, in testing now I just found the problem. If I have the phone set to UTMS then there is no Audio if the other phone is also a UTMS device, but it works fine if the other phone is GSM. If I have the phone set to GSM all calls work all the time to all devices.
The issue is calls between UTMS phones.
At least now I know i can always make/receive calls if I select GSM, I still want to find a solution though.
I am on the Telstra 850Mhz UTMS network in Australia.