Have anyone applied for multi SIM for Simba? I did state for work use . But they rejected my request.
No SG telco has multi-sim except for M1 & her MVNOs. Think it has something to do with IMDA
But with the extra $$$ paid for having the feature, it might be better to go for another sim with another number. Since you mentioned it's for work purpose, it should be covered right?
There's a workaround though if you have an iphone. Activate the voice app in that phone then put the sim back to where it was intended for.
There's a problem though. Outgoing calls isn't the issue, incoming calls are. You might or might not get them. I have the voice app in the background permanently, but only get incoming calls sometimes.
And if it's for your work purpose, then might as well get a new sim. Plans are quite cheap nowadays