I havent looked deeply into Singapore, but to me it looks like a...

I havent looked deeply into Singapore, but to me it looks like a distraction more than anything else.
How much do you see it contributing to profits, and how long, and how much capital will it take to get there ?

There are questions about Australia as well, mostly because there is a history of it being a mobile graveyard with 3 mobile struggling ago, eventually merging with Hutchison to form VHA, and still having never made a profit (i dont think). VHA ARPU is around $43, so TPG will want costs below that.

One of the reasons VHA have struggled is because Australians have very high mobile penetration, and users are very sensitive to coverage, bars are more important than g's. Telstra have used this to their advantage for a long time and charge a premium for it.

No matter how well or cheaply TPG's rollout goes, it will still be known as the worst mobile provider, which will effect their ability to sell plans.

Meanwhile, TPG is more dependent on revenue from fixed line than the other integrated telcos, and their NBN market share has shrunk in each of the last 6 quarters according ACCC NBN stats.

Nero fiddles while Rome burned

It might work out in the long term, but a lot of capital will be destroyed before it gets to that.