1. Open the main application of electronic signature.

2. Find the application settings or options menu. You can find the menu button in the upper right corner or the upper left corner of the main interface of the application.

3. Look for options related to photo saving in the Settings or Options menu. There will be an option called "Save photos to your phone".

4. Enable this option to allow the main application of electronic signature to save photos to its own mobile phone photo album or designated folder.

5. After saving the settings, you can create or edit the signature in the main application of electronic signature and save it as a photo to your mobile phone.