i am using q mobile noir a7 for a 14-days now . excellent mobile with excellent display result and features. its battery is 2500mah and a10 has 2000mah while a9 has 1800mah so clearly big differnce of battery capacity which is very important in an android set. its internal storage is 3GB again excellent for dowloading apps from google play. its camra is very nice but has no flash . it has face unlock system also . so very very good set from q mobile .