Internal Memory (Ram) - Microsoft lumia 635 User Manual

White LDI (indicates no liquid damage)
Pink or red LDI (indicates liquid damage)

Internal Memory (RAM)

Manage memory
To manage the internal memory, follow these steps:
You should restart the phone at least once a day:
1. Press and hold the Power key.
2. Touch the screen and slide down to turn off.
3. To turn the phone on again, press and hold the Power key.