New phone, same Thai SIM, out of Thailand, access to BKB App ?

Hi there..

I am currently visiting familly in Switzerland for next 2 months, and I use my BKB App here with no problems. In my mobile phone bought in Thailand long time ago, I have my Swiss SIM card and my Thai SIM card (activated for international roaming before leaving Thailand, in case).

I would like to buy a new phone here in Switzerland, insert in it my 2 SIM cards (Swiss and Thai) and transfer 100% data from old to new phone. Does somebody know whether I will continue to be able to open and use my BKB App with my new phone here in Switzerland ? I am scared of BKB not "recognising" my new phone (yet still my Thai number SIM in it) and not allowing me to open and use the BKB App while here in Switzerland.

What is your experience or thought ?