eSIM vs traditional SIM in IoT
TL;DR
eSIM (eUICC) wins on flexibility and long-term cost, especially when the product ships across countries. Traditional SIM still wins on simplicity and upfront price when the carrier will not change and volumes are low.
Comparison table
| Criterion | eSIM (eUICC) | SIM tradicional |
|---|---|---|
| Carrier change | OTA, no hardware touch | Physical card swap |
| SKUs per country | One (same hardware) | One per market |
| Unit cost | Higher (chip + provisioning) | Lower at low volumes |
| Ruggedness | Soldered (MFF2/iSIM): very high | Removable: exposed contacts |
| Stock logistics | One global SKU | Stock per country/carrier |
| Learning curve | Needs SM-DP+, IPA, etc. | Zero, everyone knows it |
When eSIM is the right call
Product sold internationally, long lifecycle (>5 years), or risk that the carrier raises prices or shuts down a network.
- ·International OEM
- ·Vehicles and trackers crossing borders
- ·EV chargers in multiple countries
- ·10+ year service life
When traditional SIM still wins
Low volume, single national market, no carrier change foreseen. The eUICC infrastructure investment does not pay off.
- ·Pilots and prototypes
- ·One-country single-shot deployments
- ·Short-life products
- ·When the customer demands physical SIM access
Verdict
For new products from 2025 onward with any expectation of selling beyond Spain, eSIM (eUICC with SGP.32) is the default. Traditional SIM becomes a niche.
FAQ
Is switching to eSIM expensive?+
The eUICC chip costs 1-3 EUR more than a normal SIM. The gap is recovered in logistics and support past a few thousand units.
Can I stick to traditional SIM if my product only sells in Spain?+
Yes. If you never change carrier and sell only in Spain, there is no urgency. Still, preparing for eSIM eases future migrations.
More comparisons
LTE-M vs NB-IoT
LTE-M wins when the device moves or needs low latency (asset trackers, alarms, wearables). NB-IoT wins when the device is static and needs multi-year battery with deep indoor coverage (meters, parking, sensors). When in doubt, check real coverage at your deployment country before standard specs.
MFF2 (soldada) vs 2FF removible
MFF2 removes vandalism, vibration, and dirty contacts; ideal for industrial and outdoor. 2FF removable offers field-swap flexibility and costs less. Today the norm is MFF2 in eUICC form to get the best of both.
SGP.22 (Consumer) vs SGP.32 (IoT)
SGP.22 targets devices with a screen and a human user (smartphones, tablets). SGP.32 is built for headless IoT: the device asks the server for a profile, no QR codes, no human input.