Guides

Each guide answers one question, with sources and the date of the last check.

• 2G and 3G shutdown dates, by country and operator
  When each mobile operator switches off 2G and 3G, and what it means for IoT devices. Table with sources, updated monthly.
• Permanent roaming rules for IoT devices, country by country
  Which countries ban or limit permanent roaming for IoT SIMs, for how many days, under which rule. Table with sources, updated monthly.
• Private APN vs public APN vs VPN for IoT
  What a private APN is, how it differs from a public APN and from a VPN on the device, what each costs and when to use which.
• SGP.32 explained: the eSIM standard for IoT
  How the GSMA SGP.32 IoT eSIM standard works: eIM, IPA, SM-DP+, protocols, and how it differs from SGP.02 and SGP.22.