Sprint mobile operator is one of the baddest network that I have ever used. simcard is almost buy for 5 hours in telling no network available or emergency calls only. Call rates are also very high, deducted unwanted balance from sim and when tries to call customer support than they are always busy.
Although net packs are little bit low in cost as compared to other network but that is the use of it when ther is no network. My almost 600 mb was wasted because of no network customer support is also bad they talk very rudely.