Dongle 400 in Czechia
The Dongle 400 rates good on all 3 networks in Czechia (T-Mobile, O2 and Vodafone).
Network by network
| Network | Verdict | Bands in use it supports | Core bands missing |
|---|---|---|---|
| T-Mobile | ✔ Good 71% | B1 B3 B7 B20 | — |
| O2 | ✔ Good 67% | B1 B3 B7 B8 B20 | — |
| Vodafone | ✔ Good 71% | B1 B3 B7 B20 | — |
Better-rated models here
In Czechia it is already among the best-rated models.
About the Dongle 400
LTE Cat 4 · Hyper Nexus dongle1
- 4G B1 B2 B3 B4 B5 B7 B8 B12 B17 B20
Built for industrial AR glasses. USB Type-C, IP66.
Network access: long-term roaming
Many globally deployed IoT devices use multi-network roaming SIMs that can attach to several networks in a country, but some countries restrict long-term roaming by foreign SIMs. A local SIM roaming domestically is not affected.
No clear rule found: No information yet.
All networks and bands in Czechia → · The Dongle 400 in 172 countries →
The Dongle 400 product page · Back to the home: ask, enter a model or bands, or compare models
Sources
- A Product specifications and certifications (manufacturer data) Hyper Nexus · 2026-09
