Any bro can advice am I able to sign online with StarHub SIM only, the number will be port in from M1 and at the same time change of ownership.
As by doing online I am able to enjoy the $120 rebate, otherwise the rebate will not be giving.
Just do the sign up at any Starhub shop together with the original owner of the line which you intend to transfer the ownership from (NRIC of the original is required). By doing this you will not need to pay for $20 administrative fee to M1 for the transfer of ownership.
After the line ported over to Starhub just re-contract again online with the "nocontract" promo code for the $120 bill rebate.