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Celcom Axiata Berhad, DBA Celcom, is the oldest mobile telecommunications company in Malaysia.

Celcom is one of a member of the Axiata group of companies.

Being one of the very few companies in Malaysia to originally obtain a cellular phone license, it successfully introduced mobile telephony in Malaysia through its ART-900 ( Automatic Radio Telephone ) service, using first generation ( analogue ) ETACS ( Extended Total Access Communication System ) specifications of the United Kingdom, a derivative of the US-AMPS ( Advanced Mobile Phone System ) technology.

The ETACS ART-900 was started using the prefix " 010 ".

Celcom now uses the dialling prefix identifier of " 013 " and " 019 " and offer digital GSM ( Groupe Speciale Mobile ), an originally European standard, now largely a world standard for mobile communications.

The original frequency band for GSM is 900 MHz, and was soon extended to 1800 MHz to cater for a much wider bandwidth requirements.

The 2100 MHz band is used for their dual-channel HSPA + network.