hi.. m new to android and new to S II also.. this awesome mobile giving me tension of application to install, from where, and what not to .. So as u guys are so genius in this part i need ur help.. 1. plz suggest me things i should know about my device... 2. Applications u use.. a. For security.. b. For maintenance of phone.. c. widgets and other applications like for pictures, camera, themes, et... 3. Where from i can get them.. Is it necessary to root my mobile.. because i don;t want to spoil my mobile warranty.. So plz guide for same.. I hacked my N73 for N-gage when it was launched.. was fun but don;t want to take risk with my costly and precious S II Will be glad to get ur answers... thankx in advance..