1- Switch off Mobile.
2- Press & Hold Power and Volume down to enter boot mode.
3- Select Recovery mode.
4- Android Logo with yellow exclamation mark will appear.
4- Press & Hold Power & Volume up.
5- Select Wipe data/Factory reset.
6- Choose Yes-delete all user data.
7- When wiping is completed.
8- Reboot system now.
Moto E 2nd gen. has following feature:-
• Android Lollipop
• 4G LTE Support
• 1GB RAM