All of the major operators started 3G UMTS in the 2100 MHz band. Operators have also started re-farming their 900 MHz band (which is a frequency band of GSM) to use it for UMTS. Airtel, Idea is also using 3G UMTS in 900 MHz, for some of the circles.
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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…
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