ALREADY SIM HAVE IN PHONE EASY TO USE 4 G SUPPORT CAMERA BACK AND FRONT ARE GOOD VIDEO CALLS SUPPORT IN MINIMUM PRICE IS IS VERY USEFUL PHONE LOW PRICE RECHARGE ALL THING IS GOOD I REALLY LOVE IT I AM USING PHONE 2 MONTH AND NOT ANY DISADVANTAGES OF PHONE JIO PHONE IS VERY FAST BROWSING WITH 4G VOLTE SUPPORT .