Default Paid App backup

Recently i had to get my phone formatted and was quite worried if i had to register my apps (mainly whats app) again? I lost my number of whats app but it was working fine. And i don't want to provide my changed number to people in what's app. So, on stock unrooted rom it became a trouble for me.

Posted a querry here and came to know i have to get my phone rooted and install titanium backup pro.

Sadly you guys are wrong! Use lg backup and restore (in built in our phones) and it works like a charm! It worked for me and quite nicely! Never imagined it.

Just sharing it for people unknown of this fact

Sent from my LG E988