I also faced the same problem. I bought HTC s710 from incredible collection at waterfall mall(rustenburg) on august 2009 . I'd faced alot mf problem like sim card missing error, screen blank, battery drain, . It is still in warranty so i handed it to vodacare near waterfall mall. But totally 3 times i got my phone back with out any results. Actually they just returning the phone. Ive still 17month warranty. Guys pls tell me wat to do. Email me @ arunmatrix123@gmail.com