Follow along with the video below to see how to install our site as a web app on your home screen.
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A couple of things you can try are:
1: Clear data/cache of the gallery app and reboot your phone. Wait until the gallery app has finished scanning and see if your pics appear.
2: Connect your phone to your pc and create a new folder on your sd card and transfer your pics from the old folder to the new one, then delete the old folder.
I don't know if any of the above will help, but it might.
Good luck.
as for 1, wont that delete the pics?