Phone [Q] i9300 Status bar problem

Hi everyone ! (I'm sorry if i post in the wrong thread and please move my post if is need where is ok. Thanks)
I'm using Samsung Galaxy S3 i9300 with 4.3 (GNA7) and i have a problem with status bar when i'm in a call he is auto touching and activating GPS, Wireless and sometimes changes my hour settings. I mention that I have some bigger ears than else and maybe this is the problem. Can anyone tell me how to block status bar when i am in a call or something like this? Thanks and forgive my bad English !