[Nevil Christopher]

lumia 435's default apps(photos,videos) and files(file manager app) are not detect phone memory(internal memory)data.how to recover that data.

[Noblet754]

1. From the Start screen, touch the screen and slide left.
2. Scroll to and tap Settings > backup > app list+settings.
3. Tap the Settings backup switch to turn on.
4. If necessary, sign in to your Microsoft account.
5. Tap back up now > continue.
6. The backup begins and may take several minutes lite blue.

[jameslite]

From the Start screen, touch the screen and slide left.
Scroll to and tap Settings > backup > app list+settings.
Tap the Settings backup switch to turn on.
If necessary, sign in to your Microsoft account.
Tap back up now > continue.
The backup begins and may take several minutes LiteBlue Liteblue USPS USPS Liteblue

[Ryujingt3]

Are you talking about what happens when you plug in your phone to your PC and the internal memory isn't detected?