eSIM sounds premium, but on IoT gear 'premium' isn't 'worth it'. Only three scenarios actually pay back; elsewhere a physical SIM is still cheap and enough. Don't adopt eSIM for fashion.
Scenario 1: Cross-border roaming switch
- Device sells into many countries, each with its own carrier.
- eSIM swaps profiles remotely — no teardown, no shipping physical SIMs.
- Saves: no per-country SIM inventory, no on-site swap labor.
Scenario 2: Line pre-install
- eSIM soldered onto the board — no tray, no slot gap.
- Cuts manual SIM insertion, speeds assembly.
- Caveat: a wrong profile means reflash, so lock the right profile before shipping.
Scenario 3: Post-sale number swap
- A dead physical SIM or carrier switch means mailing a new card.
- eSIM pushes a profile OTA — customer self-activates in 2 minutes.
- Saves: shipping, wait time, and one support call.
eSIM pays when you must 'touch the device after sale'. Otherwise, a physical SIM stays the cheapest option.
FAQ
What's the difference between定向 and full-roam data SIMs?
定向 SIMs are limited to a designated APN/app and are cheap; full-roam SIMs use public networks—wider coverage but costlier.
How is IoT SIM real-name verification done in Vietnam?
Vietnamese carriers require business/personal verification; bulk devices are managed via a CMP platform.
How do you manage the M2M SIM lifecycle?
Covers activate/suspend/deactivate/recover; use a CMP console to monitor traffic and status remotely.
Should I pick 4G or 5G SIM?
Depends on device and coverage; most CPE/pocket WiFi use stable 4G, 5G when coverage exists and high speed is needed.