So far I have tried:
- Factory reset
- Tried to boot to recovery to clear the caches, but it just goes to a black screen
- Toggling between Airplane mode (as suggested on some forums)
- Tested setting up as a portable hotspot. It goes through the steps and completes, but then just says that the feature is still switched off
Any help would be appreciated. I would rather not flash a custom rom, but am open to the idea if needed. If this is a hardware fault and needs to go away under warranty I would be better to find out now and send it off sooner.