Every voice call initiates an unknown simultaneous data connection

[noknokrh]

If I am calling to any 2G or 3G recipient or receiving a call, an unknown data connection is initiated after a voice call starts. The data connection ends when the voice call is terminated. I see two calls (voice and data to internet configuration) in the log then. Voice call may be incoming OR outgoing, but the data call is always outgoing. The call produces data transfer at the provider.

Is this possible to know, which application initiates the data call?
What is a purpose of the data connection during voice call even if I am calling to a device without any data capabilities?
Or is this one of installed apps spying on me?

What the hell is going on on my phone?

I have this problem since 2 two weeks, but i have no idea what i or someone else have/has changed on the phone to create this problem!!!???

Many thanks for urgent help!

[noknokrh]

sorry i did not add the model type:
my problem concerns a N96.

many thanks in advance!

[noknokrh]

it's really a big problem because roaming costs for this unknown data connections have been created.

therefore, these connections are really on the air.
But why in the hell??????

[noknokrh]

OK, i have solved the problem!


There is one unimpressive connection setting saying "video adding" or "video connecting".
Turning off this option solves my problem and everything is OK.

But, I have no idea what is going in detail, if this option is activated.
Even calls to very old phones or wired phones produces data transfer rates,
which is payable to the provider.
Which data goes on the air?
What is the target address?


Is there an explanation for this, out in the world?


However, I am very happy to have a solution for the moment!


Many thanks for helping and trying to help!!!!!


Merry Christmas to everybody here!