Does One Card supports contactless tap and pay using mobile NFC?

Yes

Payzapp maybe supports tap n pay these days...

Which bank issued? Sbm, it works in gpay but not on cred and Paytm

I was able to add my OneCard by South Indian Bank in GPay and have been using it since for a long time. No issues. Which bank is your OneCard, OP?

All cards support, it the the app that has to enable integration with each bank

try adding in cred or Samsung pay 

My card issued by CSB bank. 

I have tried cred, in cred my other credit cards are showing to activate but not One Card in the list. In G-Pay getting below message.