Twilio Super SIM
This product is intended for use in IoT devices and not really for 'iPhone use'. A few things to consider:<p>First of, in the telecom market, there are two ways to get a discount: Buy more SIM cards, or buy more data. Let's say you offer a track-and-trace product, have deployed 1000 GPS trackers, you can easily get the monthly fees and the usage fees down to cents. Same goes for your 'GB-per-month' personal phone subscription, you buy more data, you get it cheaper.<p>But since roaming will always be costly, even for wholesale carries, SIM card subscriptions that can be used globally are almost always A. expensive, or B intended for IoT (low usage). (GPS, trackers, sensors, feedback buttons, etc). Twilio is focussing on the latter with this SIM.<p>That brings us to NB-IoT and LTE cat M.<p>LTE cat M(machine) is basically a stripped down LTE modem, while an NB-IoT modem (or LTE cat Narrowband) is a stripped down LTE cat M modem. Network parameters for these types of connectivity have been tweaked in favour of power consumption at the costs of low bandwidth and high latency. You could say that LTE-M is used for 'MB's per month'-devices (smartwatch for example) and NB-IoT is used for 'bytes per month' devices (is my container full already).<p>NB-IoT is cheap, extremely power efficient, but is not intended for moving devices.<p>LTE-M can be used for more demanding applications, like smartwatches, panic buttons (including voice) etc. It can also be used in roaming applications, but that's it. No streaming video etc.<p>So if you are looking to deploy a large scale IoT application, you want cheap, simple and energy-efficient hardware, which is why you need NB-IoT or LTE-M.<p>You could go for other technologies like Sigfox or LoRaWan, but they are inferior to NB and LTE-M if you ask me (roaming, availability of network/hardware).<p>In my view, Twilio does a great job of offering all kinds of telecom services (one stop shop), a common strategy in telecom called 'bundling'. But if you know what you want and where to look, you can get much better rates... Margins are great on this, I can assure you that :)