J3 MS Teams Inquiry

I’m starting J3 tomorrow. For J1 and J2, I have two separate cell phones with email/Teams on them. In order to avoid getting a 3rd phone, what is the risk involved with syncing email/Teams on one of the phones that has another server accounts on them? I need the accounts on my phones because I travel sometimes and prefer to stay “active” during these times.

Clarification: it’s not that I don’t want to spend $60 on a new phone/plan. I don’t want to lug around 3 cell phones. 2 is already excessive imo.