i just change into the cis plan sim only as well. but i checked with cso. the number display is not free permanently. only for 6 months as i change plan. so i guess i still have to change telco again later. or change plan if it can extend the caller display free. anyone got any idea which is the best way?
Yup. Recently I realised that the caller ID is free for 6 months if you sign up at shop. But 12 months free if you sign up online. End up, I didn't sign up either way.
Anyway, the market very competitive and very fluid, so many options out there after 6 months. Put in your calender in 6 months, then ask M1 if can extend free caller ID? Otherwise, port out and port back in.
You can try after a few months, port to zym try for 2 months and port back to M1 CIS (on website), you get 12 months free.