Apple has begun contacting iPhone customers who complain about poor battery life on their device following installation of iPhone 3.1. Customer care operatives are making contact with 11 questions, focusing on such things as push email, WIFI, Bluetooth and which apps a user uses. Customers are also being offered Battery Life logging software, which gathers information about their product usage and battery life. The application – seemingly distributed using the Ad Hoc system – also gathers extensive data logs on this, which are then shared with Apple. In related iPhone news, AT&T announced the MMS would be switched on from this Friday late last week. The carrier says it had to upgrade its cell phone towers and data centres before it could enable the service on the iPhone. AT&T spokesman, John Britton, said,“Our highest priority has been to ensure the best possible customer experience with MMS, This is how long it’s taken to complete this process.”