Xiaomi is company in market is newer but product is great.This is one reason, company will give a all feature very reasonable price.If you have budget of 15000.This is fine product ever.I am personally use this phone.Xiaomi Redmi Note 3 isavailable in two flavor 16 GB and 32 GB internal storage.There is another thing isFingerprint scanning security, this feature is available in very costly device.Yes, You can’t remove bettery. Dual SIM is there but you can use only one if you want to use SD card.Only support Micro card.All over, functionality is wise good choice at this price.Superb.