Onandroid easiest method......

What is on android

It mean on android taking a backup of your current firmware,data,cache etc. While ur phone is switched on
=NO MISSING OF IMPORTANT CALLS.

Just follow steps below.

1)download the apk.

https://www.box.com/shared/jekoug3qrl20qx25x96s

2)install scripts in settings

3)install mkyaffs2image if while doing backup shows error due mkyaffs2image

4)done

5)u can also uninstall the app now and simply take a backup using terminal emulater

You can now create a backup using terminal emulater also
Just type 1)su (give su permission)
2)onandroid

ALSO DOWNLOAD BACKUP MANAGER

FEATURES.


• Support for TWRP and Clockworkmod (v5) backups.
• Delete and rename backups.
• Verify MD5 of backups.
•Restore call logs.
•Restore apps+data from nandroid backup.
• Compress backups to zip.
• Extract files from backup files.
• Restore SMS data from nandroid backup.
• Restore Bluetooth and wifi data from nandroid backup.
• Flash Recovery.

https://www.box.com/shared/jekoug3qrl20qx25x96s

IF I HELPED DON'T FORGET HITTTIIIING THANKS...........