Say I am going overseas, I pick up a local SIM there, it's not my NZ number. I have data. Will my NZ banking apps continue to work? I don't need texting notifications etc... What about WeChat and WhatsApp? Both of those required a (NZ) local SIM at the time to register for the service... Or would I need to get a temporary WeChat WhatsApp account on a different SIM number?
Google etc .. are ok, cos I have the 2 level authentication with the app etc...
Edit. I know China have limitations but will be at other countries too :)
Cheers.