We have been hearing a number of rumors that the iPhone 5 will launch at end of September or the start of October, earlier today we heard that Pegatron who is rumored to be producing the iPhone 5 for Apple, along with Foxconn would start shipping the device to Apple in September.

Now according to the Guardian’s Charles Arthur, Apple has sent out the iPhone 5 to mobile carriers for testing, and apparently the iPhone 5 units are being tested under a fair amount of secrecy at the mobile carriers.

The next iPhones go for their testing inside locked and sealed boxes so that the carriers can carry out checks on their network compatibility in their labs. It’s very high security, as you could guess; my understanding is that barely anyone inside the carriers gets to open those boxes, and even when they do the hardware is encased in a dummy body which means there’s no clue to what the actual phone will do.

It would make sense that the mobile carriers are testing out the iPhone 5 if it is expected to launch at the end of September or the start of October.

Source The Guardian, Ubergizmo