What is Z ram on android?

Android uses ZRAM (‘Z’ in Unix terms is a symbol for compressed RAM). ZRAM swap can increase the amount of memory available in the system by compressing memory pages and putting them in dynamically allocated swap area of memory.

Does ZRAM drain battery?

Senior Member. + Using “Z-Ram” will give u more Free RAM n slightly better multitasking advantage. – It will drain ur battery fast.