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 Lumia phone forwards incoming calls to voice mail too quickly.
- My Lumia phone does not forward incoming calls to voice mail.
- I cannot share my Lumia’s internet connection with another device
- My Lumia phone has problems connecting to Wi-Fi (WLAN) networks
- My Lumia touch screen is not responding or is responding the wrong way