Dolphin sim is good for calling but it's Internet is very very poor they should improve there network and some time when I am at home or clg the single sometime Doesn't show . If sometimes you are in the moll or somewhere under ground turnal there is no network so they should check there tower and solve the problem of people if any one dolphin owner is reading this review so please please improve your network and tower I hope you will give me a positive response please please improve thanks for reading this
