UK GSM, 3G and 4G / LTE Cellular Network Frequencies GSM Frequencies4G/LTE FrequenciesBT Mobile1800Mhz800Mhz (Band 20) 1800Mhz (Band 3) 2100Mhz (Band 7)O2 Giffgaff Lyca Tesco TalkTalk900Mhz 1800Mhz800Mhz (Band 20)Vodafone Lebara900Mhz 1800Mhz800Mhz (Band 20) 2600Mhz (Band 7)Three800MHz (Band 20) 1800MHz (Band 3)UK GSM, 3G and 4G/LTE Cellular Network Frequencies – Draytek www.draytek.co.uk › Guides