Though formatting is always the workable solution to most Android phone or tablet problems such as App flash back and inexplicable errors frequently occur on memory card, it would inevitably result in data loss and cause great inconveniences. Hence, there's every reason for you to learn to recover lost Android data after format with Android data recovery software.
Perhaps the biggest headache you'd meet is which software you should trust since there're so many free Android data recovery software available on the market. Fortunately, I've find one trustworthy based on my own experience: Tenorshare Android Data Recovery Pro.
Android Data Recovery Pro enables you to freely and quickly recover contacts, call history, text messages, photos and videos from all Android phones and tablets including the latest Samsung Note 4, MX 4, LG3, Sony Xperia E3, Samsung GALAXY Tab S, LG G Tablet 8.3, etc. And the following are the detailed steps.
Before starting, you need to download the program to PC first. And make sure you've rooted your Android phone or tablet.
If Tenorshare Android Data Recovery doesn't run as expect, check whether you've installed USB driver. Generally speaking, the program will launch the Hardware Update Wizard automatically. If not, you can follow how to install Android USB driver to download it manually.