I bought this mobile since sept. 2010 and one month later I passed the mobile to the local dealer because it was hanged; power cut off and no network reception. so; the dealer changed the mobile on Dec. 1st. 2010. at Jan 1st. I sent it again to the dealer as same problems happened again in addition to the defective media player after receiving calls ( the media doesn't appear to play again) and the hang off for several times within the day. after 3 months the dealer informed me that the mobile is working in good condition and there is no defects with it. Now the mobile still in its previous condition without any improvement.