Hi, I am in kuwait and i am using Wataniya Carrier sim card. On using this SIM card my battery drains in 7 hours even on standby. So i changed the SIM card from the Same Network Carrier WATANIYA, but still the problem was not resolved. Later i tested to another carrier called VIVA in kuwait. On using VIVA sim card in my phone, battery stands up for upto 2 and a half DAYS, even on heavy usage like Wifi, Bluetooth and making or recieving calls in 3G mode. SO whom to blame WATANIYA or Mini GALAXY If anyone has similar problem and not yet resolved try on different carrier and check. If anyone has resolved the same problem without changing the carrier please share your solution.