treequell I found the Bluetooth issue which was actually not a Bluetooth issue. Usually I used this phone while driving, but after I found that I could not initiate a call, I took it out of the car and tried to find what could be the problem. To my surprise without Bluetooth was the same issue. I found that after the update the 2G connection was not activated. I activated it and after that the operation became OK. In our telephone network, the initiation of a telephone conversation is done on 2G, after it the conversation on ELTE. The problem was that, seeing that it has an ELTE connection, I thought that the connection with the provider was fine, but in our area it is not enough, we also need 2G too.