The smartphone was launched in june 2017.It is 3600mah and it is not removable.its two colour available hare like black and gold.starting price 12000 indian rupees with 3 gb ram and android version 7.0.The samsung galaxy’s some problem is- this product is not NFC feature.Not available fast charging technology and battery backup not so good.when I continues use the galaxy j7, total battery backup is only 5 hours.network technology some issuse problem also. Internet 4g speed is not better but camera quality is very good.