Make sure that your phone is running the latest software. You can find out more about the software changes for Lumia phones from here.
- What to check if I can't sign in or create the Microsoft account on my Lumia phone during the initial setup?
- What is the WhatsApp messenger and where can I download it?
- How do I switch my Lumia calendar views between 12- and 24-time format?
- How do I remove my Lumia phone from the account settings at windowsphone.com?
- Why don't I have the option to select a non-Bing hardware search provider?