Make sure that your phone is running the latest software. You can find out more about the software changes for Nokia phones here.
- How can I block phone calls and text messages on my Lumia using the call+SMS filter app?
- Is Microsoft account required for my Lumia phone to work?
- Why can I not see new features after updating to Lumia Cyan?
- My Lumia phone does not work or respond as expected
- How can I check the IMEI number of my Nokia Lumia phone?