Touchscreen triggered by cheek while on the phone? When I'm on the phone, my cheek will often push buttons on the screen, causing either the call to end, or unintended navigation. This is really annoying - I try my best to keep my face away from the phone but I'm not always successful.

Am I the only person having this problem?
Is there an actual solution?
On my phone I can click the power button to turn off the screen, so no buttons are there to be pressed.