If you are a beginner, start with – it’s 90% as good as OpenWRT but with zero command-line work. If you are a power user hungry for VPNs and SQM QoS, invest an afternoon in OpenWRT .

: Manually select specific 4G frequency bands (like Band 3, 28, or 41) to find the most stable connection in your area.

Zlt P21 Firmware Better [2021]

If you are a beginner, start with – it’s 90% as good as OpenWRT but with zero command-line work. If you are a power user hungry for VPNs and SQM QoS, invest an afternoon in OpenWRT .

: Manually select specific 4G frequency bands (like Band 3, 28, or 41) to find the most stable connection in your area.