UK GSM, 3G and 4G / LTE Cellular Network Frequencies GSM Frequencies3G FrequenciesBT Mobile1800Mhz2100MhzO2 Giffgaff Lyca Tesco TalkTalk900Mhz 1800Mhz900Mhz 2100MhzVodafone Lebara900Mhz 1800Mhz900Mhz 2100MhzThree2100MhzUK GSM, 3G and 4G/LTE Cellular Network Frequencies – Draytek www.draytek.co.uk › support › guides › kb-uk-gsm-3g-4g-lte-cellular-net…