I bought a T-mobile hotspot off of ebay for $25, Samsung V100T, purchased a T-Mobile Sim Card from Amazon for $5, and added a 2GB data plan for $18.02/mo (taxes included). I sometimes get 4G, but most often I get 3G. Works in every country I have travelled to in the past 2 years. If purchasing a hotspot, be sure to research if it is compatible in the countries travelled to. I can use my ATT cellphone and have WiFI calling and texting internationally. The data plan is only limited in the US, international data is UNLIMITED.