On 15 May 2005, Celcom launched the first 3G service in Malaysia, covering most major towns where there is a Telekom Malaysia telephone exchange and either HSDPA or EDGE services within radius (GSM UMTS maximum allowed range) with GPRS as basic data coverage.
Celcom operates 2G GSM/GPRS/EDGE, 3G WCDMA/HSPA+, 4G LTE networks [REF].