Panasonic T44 in best condition. battery backup is like new phone.... it has a 2400 mAh battery, on a screen size of 4 inch. so, it provides a very good battery backup. Working very well no problem in phone. You can return it if you discover any problem in it. It has 1GB RAM, 8GB internal storage which can be expanded to 64GB at least. It runs in Android 6.0 (Marshmallow). That means it supports Facebook, WhatsApp, Instagram and other apps also.