Make sure that your phone is running the latest software. You can find out more about the software changes for Lumia phones from here.
- My phone does not charge
- I cannot send or receive multimedia messages (MMS) on my Lumia phone
- My Lumia phone cannot connect to the internet using Wi-Fi
- What content can I copy using Transfer my Data app from an old phone to my new Nokia Lumia?
- What type of data can I transfer from my old phone to my new Lumia Windows Phone 8?