Method #1. Using ES file manager to take app backups.
1. Install ES file manager App.
Open it, by default a homepage windows will open.
To Backup apps open ES file manager – on home page tap on the “App” icon.
You can see all your installed app here. Simply press and hold to select an app or multiple apps. – now tap on the backup icon. You’ll see a confirmation bar displaying stats.
Slide from the left side to open ES sidebar, at bottom you’ll can see Setting Icon (which is highlighted in image) Tap and Tag again on ‘APP’.
Now Tap on App backup Directory as seen in the below photo and locate where you want your apps to copied. I recommend setting your SD card so even when you format internal storage while factory reset you could have a backup on SD card.
Method #2. Backup app through recovery.
Method #3. Backup Over Internet (AirDroid)
Easy Backup & Restore is free android app help you take backup your call logs, text messages, bookmarks.