Why To Backup My Phone data :
One of necessary step you have to do be for doing any actions like (root , change Roms , firmware's
, rest your data ) is Backup and in this Tutorial i will show you how to back up all your phone data like calls.contacts,sms,apks and its data, photos and videos .
Consequences if you don't back up :\Simple You may lose your data , like calls.contacts,sms,apks and its data, photos and videos .
Instructions :
1-How to backup your phone data ("Calls,Contacts,SMS")
2-Click Here to backup your phone Apps "APKs+Data" Using Helium - App Sync and Backup
3-Backup your photos and videos
First of all yo must have a google account signed with your Android Phone ,
See here the instructions
Then Back up all your media with google photos app