For those intending to port main line / second line into SIMBA, or get a second line on SIMBA, rather than doing it online, can consider doing it at any of the authorized dealers/shops or SIMBA service centre. Faster than online. My port in from M1 to SIMBA, done at authorized dealers, took less than 24 hours. Done in the afternoon, I think the system did the port-in at night, next morning, my M1 Sim card down liao, and my SIMBA sim card is up.
If register online, think still need to activate SIM card. If done at the shop, there is no need to do the activation. Once the system triggers the port in and port in is successful, the SIMBA sim card is up and running. Then one just needs to download the SIMBA app (and SIMBA voice app if SIMBA does not support Volte on the phone). Then one can use the SIMBA app for top-ups, and add info (email etc).