Does the Quectel EC25-MX work in Brunei?
✘ 1 network not usable
No. The Quectel EC25-MX cannot connect to any network we track in Brunei: it lacks their 4G bands.
- ✘ Not usableNo 4G band in common whyEvidence C · 1 source
- B3 · missing
None of the missing bands is a main band here, so they do not limit the verdict.
below 1 GHz (coverage) 1–2.7 GHz 3–7 GHz mmWave · dashed = the Quectel EC25-MX lacks it · • = a main band
DST · DST uses B3; the Quectel EC25-MX supports none of them.
Same model, other markets (networks good): ◐ United States 0/3 · ◐ India 0/4 · ◐ Singapore 0/4 · ◐ Saudi Arabia 0/3 · ◐ United Kingdom 0/4 · ◐ New Zealand 0/3 · ◐ Japan 0/4 · ◐ South Korea 2/3 · ◐ Canada 0/3
Similar models here: Dongle 400 · 1/1 good · Huawei E3372h-320 · 1/1 good · Huawei E5576-320 · 1/1 good
All 172 countries for the Quectel EC25-MX → · Brunei: every network →
Sources for this answer (3) · evidence A = two or more sources, one official · B = one official source · C = industry and independent sources
- A EC25 variants and their bands, as published by Deutsche Telekom IoT Quectel · 2021
- A EC25 Series specification (bands of every variant), as published by Mouser Quectel · 2020
- C List of LTE networks in Asia (bands in use by operator) Wikipedia · 6 Oct 2026
Network by network
| Network | Verdict | Main bands | 4G bands (✓ supported · ½ partly · ✗ missing) | 5G | LTE-M · NB-IoT |
|---|---|---|---|---|---|
| DST | ✘ Not usable 0% | — | B3✗ | — | — |
Verdicts come from the Band Atlas engine on the open data (CC BY 4.0, GitHub). Networks change: confirm with the operator before you deploy. This page is not legal or certification advice.
