no videos can be opened through youtube app. Here is one of the link One - Damien Rice - YouTube
. I am using a GSM connection.It is happening in cellular. but the same SIM card works fine in iPhone 4 and my old (Andriod 2.something) samsung galaxy ACE. I don't think its issue with carrier.
No it is not rooted and the fastboot was activated. I tried to even deactivating it and playing the video. But no use.
I had downloaded couple of apps along with anti-virus AGV app. Could this issue be due to a virus ?
Should I Reset the phone to Stock ?