I dialed *228, option 5 (metropcs), because I read in a thread that it might give me 3G (Miami). It didn't. But my battery has improved dramatically. When I get home from work (9 hrs) my battery usually reads 20-25%, but yesterday it was 70%. Today after 4 hours of regular use I'm at 90%. I didn't make any other changes to my phone. Total noob when it comes to cell phone tech. Is this possible?