guys, im using maxis postpaid which is under my dad's name (contract), so, i bought a new phone which uses nano sim...so i need to change my current sim (normal sim) to nano sim, do i still need to bring along my dad to fill some form for the process?

as i got quoted by other forumer, which he/she said;

"As I know u bring the old SIM card, ask them to replace new one without activate it. Then your dad has to call 123 and activate it"