Which folder is the mobile phone number in?

The phone number of Android phone is not saved in any folder, but in the address book APP of the system.

If users need these phone numbers as backup, please click the menu button in the address book interface, select Import or Export, click Export to the body for storage, or export to the memory card. Then you can find a *. Vcf file in the root directory of the body memory or external memory card in the file manager. When restoring in the future, you can click the menu button in the address book, select Import or Export, and click Import from Memory Card/Body Memory. (Other models can also be imported with this file. )