1. Contacts - Display Options - Chose Contacts to display (SIM, Phone, Google, Twitter, Facebook, etc)
2. GO SMS din Android Market
3. Nu. In general asta cu "formatatul" lucrurilor (baterie, televizor, masina, etc) mi se pare o mare tampenie.
4. Settings - About phone - Battery use
5. In mod normal nu, ramane in Task Manager, dar depinde foarte mult si de cate/ce aplicatii ai "inchis" cu Home. Long press HOME si ai acces la aplicatiile recente, plus Task Manager.