Hi guys I finally moved to Android from WinMO and loving SGS. Previously i used Samsung B7610 WinMo. I have few basic doubts. 1. how do i sync my phone to google ? i can see all google contact list in my phone book and hence its auto synced now. however i was previously using MS MyPhone which lets me see the contacts , SMS etc on web. I can edit those and then later after i sync , those changes where reflected on my phone. How do i same with this phone ? esp how do i view my phone contacts and SMS over web on google ? 2. How do i kill apps ? I have seen few apps on android market but let me know the best one 3. How do i save battery ? yes i have turned off 3G,Bluetooh,Wi-Fi 4. How do i force phone not to use any data connection ? i.e now my phone is always connected to Net (cauz i have limited data plan) 5. As per spec. this phone has got 512 MB RAM, however i can see that only 75 MB is free even after killing backgrnd apps. Note: i am using default UI. 6. If i use other UI frm 3rd party can i switch to default UI later ? Please name a few good ones...esp the one which looks like HTC Sense 7. How do install .apk files from PC to phone ? ANy1 tried DROID EXPLORER ? Please help me guys..i am new to this device. Thanks in advance.