A portable router that supports both 4G and 5G networks can offer flexibility when users move between locations with different levels of mobile coverage. Where a compatible 5G signal is available, the device may connect to that network, while supported 4G connectivity can provide another option in areas without 5G service. This can be valuable for travellers, remote employees, and field professionals who work across different environments. However, support for both network generations does not guarantee access to every operator or frequency band. Users should verify SIM compatibility, supported bands, network-lock restrictions, and regional availability before buying. Understanding these specifications helps buyers select a router that suits their travel destinations and connectivity requirements.