They are the strongest among independent MVNOs. Gomo and giga are essentially ST and SH in another form.
Other than CL, there is no other independent MVNO that comes close to customer base and reliability. Zero1 can be unpredictable even though the 9.90 plan is attractive, Vivifi seems ok but doesn't seem to have much popularity and I think grid is same as vivifi when it comes to popularity.
Vivobee and RedOne are more catered towards foreigners who work in SG and want a cheap plan
I would say, in terms of MVNO ranking, this is probably the case
1) Circles
2) GRID
3) RedOne
4) MyRepublic
5) VIVIFI
6) Zero1
7) CMLink (for now)
Unknown:
Vivobee (really hard to gauge as their plans aren't aimed for locals, plus their plans is so darn confusing I'm not even sure if the foreigners will get it or not)
Reason why GRID is so high is because it has the strong trunk communication as core and it's popularity is quite high compared to other SingTel MVNOs, especially amongst younger population. I've seen a few friends on GRID while almost nobody know the existence of Zero1/VIVIFI. RedOne has Malaysian side as backing so it's not that bad. China Mobile CMLink also has their China backing so it may not be that bad too, but unconfirmed because it is too new.
MyRepublic probably have to use their broadband as anchor and the mobile as side project with minimal profitability if any.
Zero1 plagued with billing issues, therefore there's a much higher chance of becoming another Zero Mobile.
VIVIFI may be able to save themselves with their $8.80 Lite plan, as it's a good deal for those that need lots of talktime and not much data. Recommended that plan to a few of my friends for their parents already, even though I'm not affiliated with them.
