I've checked previously with SingTel CSO, there no CIS promo for SIM only. I know M1 still have CIS deal for SIM only, free CID & autoroaming.
I see. Thanks for pointing this out. I did not ask for the CIS plan today and this was from my memory.
We have two SingTel Combo 2 plan and the 2GB data are not that enough and sometimes we will exceed and need to pay S$10.7 for that.
I was using the 1GB CL Flexi line to bridge the gap previously but I just subscribed to Data x3 plan (S$5.9 for 24month, promotion price, usual price S$9.9) to get 6GB which is enough for me.
For the other line, I am thinking of either switching to SingTel SIM only plan or Gomo plan in Dec when the contract expires. If the SIM only plan ($25.35 for 20GB promotion, original 6GB) is without the free Caller ID, it seems GOMO (S$20 for 20GB and free Caller ID) is better.