The original frequency band for GSM is 900 MHz and was soon extended to 1800 MHz to cater for much wider bandwidth requirements. The 2100 MHz band is used for their dual-channel HSPA+ network. Celcom is also licensed and has been operating FDD-LTE on 1800 MHz and 2600 MHz .
Read moreWhat is the frequency band in mobile?
Nowadays, mobile phones primarily use three technologies based on antenna cell networks. GSM (or 2nd generation mobile telephony – 2G) runs on the 900 MHz and 1800 MHz frequency bands.
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