1 FNB APP for 2 accounts... yes or no?

Will the FNB APP work for two bank accounts on one smartphone?

This has been my question for weeks now and FNB simply does not answer the question.

Going to the bank and waiting for over an hour to speak to a Customer Service Agent does not help - they themselves are clueless about how the APP works.

Login in online and emailing a “query” does not help - FNB contracted agents simply do not respond with an email. Maybe they are the ones inundating on 087 or other Skype type numbers which I do not answer because in the past it has always been ******** or marketers. They probably share numbers like WhatsApp no apparently does.

So... does the FNB APP work with two accounts on one APP on one phone (1 x business and 1 x personal)?

Or

Can two x FNB APP be put on one smartphone to manage two different accounts?

FNB does not have the answer, I cannot get two to work on one. Is FNB forcing me to go buy another smartphone, this on-top of forcing me to buy data to connect as they force me to their APP and cancel SMS banking services.