I've been checking SIMCOM's web site and found this page: https://simcom.ee/?featured
So, if I'm looking for a 2G or/and 3G or/and 4G module, which one shall I have a look at, in your opinion please?
Or maybe, to make my question more clear, what specification makes a module be 2G or 3G or 4G?
Is it: HSDPA = 3G, LTE = 4G or so?
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