The method comprises the following steps:
1. First find and open Settings on the desktop.
2. Click "Application Management".
3. Find the application list and click "Nail".
4. Click Apply Permissions.
5. Just click on "Storage Space".
Nail is a very practical office software, which can provide users with efficient and dedicated instant messaging functions, make communication more convenient and smooth, and make work easier. Attendance sign-in, approval, leave, log and other functions make mobile office more convenient, support telephone video conference, and can initiate multi-person video conference and face-to-face communication anytime and anywhere.