Before attempting any firmware modifications, confirm your hardware matches these standard specifications: 4G LTE Cat4 (150 Mbps download / 50 Mbps upload). Frequency Bands: LTE B1/B3/B7/B8/B20/B38.
Supports up to 32 simultaneous devices on 2.4 GHz Wi-Fi. Top Unlocking Methods for Huawei B311-221 1. The Firmware Update/Flash Method huawei b311221 unlock firmware top
1x Gigabit LAN/WAN port, 1x RJ11 (for voice/VoLTE), and 1x SMA external antenna port. Before attempting any firmware modifications