Using tethering on my mobile phone
Writing and sending MMS
Sharing pictures or video clips using iCloud Photo Sharing
Using my mobile phone camera
Turning data roaming on my mobile phone on or off
Your mobile phone may not react due to overload or errors in the operating system. If this happens, it might help to restart your mobile phone.
Restart your mobile phone
Tap and hold the Home key and On/Off simultaneously until your mobile phone restarts.
Tap anywhere to dismiss
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