Tinitell does not work on 3G/4G/LTE. Tinitell is supported only by 2G networks, due to its 2G chipset. The reasons why we chose a 2G chipset instead of a 3G/4G/LTE one are two: size and battery life.
Tinitell is one of the smallest wearable mobile phone for kids on the market and also one with the best battery life span. Tinitell is only able to do this thanks to its extremely small and battery saving 2G chipset. 3G, 4G or LTE chipset would not allow us to reach such a small size and battery performance.