Also report with all information Iike this so they know u really have problems:
All my data consolidated :
Mobile number: *****
1. Go to Apple Watch, if you swipe up, is the cellular icon in white or is it clear (i.e. not even white)? - Clear
2. Go to Apple Watch, Setting > General > About, check for the Carrier bundle, is it version 3.2? - Not available
3. Go to Apple Watch, Setting > General > About, check if there is any information under ‘ICCID’ field? - No SIM
4. Go to Apple Watch, Setting > General > About > Version, check the version number, is it 4.2.2? - Yes, 4.22
5. Turn off Bluetooth on the iPhone, and Wifi on the Watch, to try to trigger the mobile connectivity and report the result. - Still cannot.
6. Restart Apple Watch and see if it solves the problem. - Still cannot
7. On iPhone > Settings > General > About > Carrier, what is the version? - Singtel 31.1
8. On iPhone > Settings > General > About > Version, what is the version? - 11.2.5
9. On iPhone > Apple > Watch > Mobile Data, what do you see when you click Mobile Data - Singtel on left. Spinning ball on right. Then both change to “Set Up Mobile Data”. What happens when you click this? - Brings me to a screen that says “You are already subscribed!”.