Reliance jio is so good sim. It is very useful for us. That freind can use the jio sim and enjoy the 4g speed. Jio speed is must. I like it jio jio jio jio is all free calling on 31st march and all free massaging for jio jio . we are use in unlimited data of 3 months for jio jio is best networking of world and the largest network . I reqvest of my all dear freinds can you buy the 4g smartphone and enjoy the jio best networking.thanks for jio group