H2O Wireless uses AT&T’s network. For $30 monthly, you get unlimited talk, text, and MMS, but you only get 500 MB of 4G LTE data before the tap shuts off completely — no lower speeds, nothing. They do have decent international incentives, including unlimited global text and unlimited international calling to over 50 countries. If you’re calling countries not on the unlimited list, you’ll have $10 worth of credit to work with each month. The absolute 500 MB data cap is rough, but the international features are strong pulls for anyone with friends or family abroad.
Republic uses Sprint’s network — kind of. They’re mostly reliant on you being in range of Wi-Fi, so when possible, calls will be made using VoIP. For $25 per month, you get unlimited talk and text plus 1 GB of 4G LTE data to use when you’re in between Wi-Fi networks. You also get talk and text while roaming, but roaming data you’ll have to pay extra for based on how much you need. No international features, so that’s it, right? Well, not quite — your $25 monthly bill might end up being less than that. At the end of the month, any data you paid for but didn’t use will be used as credit toward the next month’s bill. You’ll only pay for the data you use, something not a lot of carriers offer. However, you’ll need to buy a device through Republic to use the service.