Please to inform you that i was not using my airtel number (+91 9995833395) for last two to three months and recently i tried to use the same from UAE while roaming and it says "Sim card registration failed". In addition to that i have tried dialing to the same number and it was ringing and answered someone from India. As the sim card is lying with me and it was using the same someone from India and there was balance of INR 500 and it was valid till 2011. As they have given ref.no 30052010405 and informed that will get back to you within 24 hours, i have not get any favorable response from them upto now. read full review »