// guides & insights
Articles & Guides
Practical, plain-English guides from the Extrafon team — on connectivity, eSIM and building connectivity businesses on tier-1 networks.
IoT & M2M
- What Is IoT Connectivity? A Plain-English Guide for 2026
- M2M vs IoT: What’s the Difference and Why It Matters
- Multi-Network IoT SIMs: How One SIM Roams Across 600+ Networks
- Permanent Roaming Explained: The Hidden Risk in Global IoT
- IoT SIM Security: Locking Down SIMs, Devices and Data
- Choosing an IoT Connectivity Provider: 10 Questions to Ask
Mobile data SIMs
- Mobile Data SIMs for Business: Prepaid vs Postpaid
- How Tier-1 Network Access Cuts Your Data Roaming Costs
The eSIM revolution
- The eSIM Revolution: How eUICC Is Reshaping Connectivity
- eSIM vs Physical SIM: Pros, Cons and When to Switch
- What Is eUICC and Remote SIM Provisioning?
- The Future of eSIM: From Smartphones to a Billion IoT Devices
Travel eSIM
- Travel eSIMs Explained: Stay Connected Abroad Without Bill Shock
- How to Install a Travel eSIM in Minutes (Step-by-Step)
- The Best Way to Get Data Abroad in 2026: Travel eSIM vs Roaming vs Local SIM
- Travel eSIM Coverage: 180+ Countries on One Profile
