I have an Android phone. I am trying to root my phone. I downloaded an app that says on how to root a phone on the Play Store and followed the instructions. Then I downloaded an app from the internet. I just tapped the button "Root" and it says that my phone is rooted but the SU is not installed. The app that I downloaded from the Play Store also says download "CPU-Z" to check for root access. Then I checked if it has root access. It says that my phone is rooted. I became happy that time. Then I download Root Checker from Play Store. It says that my phone is not rooted. Is it really rooted or not?