This is the worst software provider company I ever meet in my life the working of this company is very poor.the most repeated problem of this mobile is hanging problem if we touched more than 2 or 3 time at any place in touch pad.their software of this company get crruppted within a year and you have to update the software again and again.this is only the wastage of money to purchase any product of nokia.battery backup problem irritate to work in this mobile.