Rooting a Lollipop device can breathe new life into aging hardware. Delete unremovable carrier apps.
And in that moment, Android 5.1.1 died—not as obsolete trash, but as a king who had finally unlocked his own gates. kingroot android 5.1.1
You will need a stable internet connection for the root tool to download the necessary scripts for your device model. How to Root Android 5.1.1 with KingRoot (Step-by-Step) Rooting a Lollipop device can breathe new life