You need to wait for a firmware update to your phone and then accept Extras+info app update. The extras+info app update installs the Storage Check app to the Lumia device. It will be visible in the Settings menu.
- I cannot send or receive multimedia messages on my Lumia phone
- What if I have trouble installing an update on my Lumia phone?
- Can I make Skype calls using my Lumia phone?
- What to check if I can't add or create the Microsoft account on my Lumia phone during the initial setup?
- How do I configure my number to be private when I call someone on my Lumia phone?