A920 car charger

I thing its ok, cause I just bought hfk 8020 for t720 and working fine. And until now after3 weeks its ok for my a920.

Hey, be careful...I bought one and although it charges my phone it turns itself off and many people are having the same problem. So it's okay to charge but not receive any calls!

Just thought I'd let you know that 3 are aware of this (at least the techy people I spoke to) but don't know why it's happening