MUAT TURUN NADA DERING Maxis CallerRingtones -- Dial *131*359950# tekan Call/Hantar DiGi CallerTunes -- Dial *233*1309636# tekan Hantar/Call Celcom CallMeTones -- Dial *888*212499# tekan Call/Hantar U Mobile ColourTones -- Taip CT 545505 & hantar ke 28118