Global multi-carrier IoT connectivity plans

Yes. There are several providers offering global IoT connectivity through a single SIM/eSIM that can use multiple mobile carriers, rather than tying your devices to one MNO.

Current industry research also identifies 1NCE, emnify, KORE, Soracom-KDDI, Wireless Logic, AT&T, Verizon, Orange Business, Deutsche Telekom, Vodafone, Telefónica, Telenor and others as major managed IoT connectivity providers.www.gartner.com

My shortlist

For the broadest carrier diversity:
Wireless Logic and KORE stand out. Wireless Logic says it provides access to 750+ networks across 190 countries, while KORE advertises 500+ networks/202 countries for its OmniSIM offering.wirelesslogic.com

For a straightforward developer/API experience:
Soracom or emnify. Soracom supports one SIM across 200+ countries/territories with automatic selection of the strongest available network; emnify describes access to 540+ networks in 180+ countries with multi-IMSI.soracom.io+1

For inexpensive, predictable sensor connectivity:
1NCE is particularly interesting. Its standard plan is currently $14 one-time for up to 10 years, including 500 MB and 250 SMS, with coverage in 170+ countries.www.1nce.com

One important distinction

"Global" doesn't necessarily mean the same thing across providers. There are three models:

1. Global roaming SIM — one SIM roams onto partner carriers.
2. Multi-IMSI/eSIM — the SIM can use different subscriber identities/carrier profiles and switch networks.
3. Local connectivity + global orchestration — the provider can move a device onto a local operator where permanent roaming isn't permitted.

For a mission-critical global deployment, I'd favor #2/#3 over a simple roaming SIM. Permanent-roaming restrictions in some countries can otherwise become a significant issue; providers such as emnify, KORE and Wireless Logic specifically address this with multi-IMSI/eSIM and local profiles.www.emnify.com

If you tell me your expected monthly data/device, number of devices, countries, and whether you need LTE-M/NB-IoT/4G/5G, I can narrow this to the 3 best plans and compare their actual pricing and carrier coverage.