So I have a BlackBerry Z30, which is my primary phone, and an iPhone 6 which I want to use as my secondary phone and was thinking about getting a nano SIM for the iPhone just to be able to use it. The BlackBerry uses a micro SIM and the iPhone 6 uses a nano but here's my question: Am I allowed to have two SIM cards on the same account and use them interchangeably? I read on this Koodo community forum that as long as the SIM cards are activated at least once every 90 days, it should be okay. I wanted to clarify that. I have a Koodo postpaid month to month plan with a micro SIM in my Z30 at the moment. Since I have a postpaid plan, If I get a nano SIM for the iPhone, does the 90 day rule still apply in order to keep the SIM cards usable? To add to that question, do SIM cards expire and what happens if I want to beyond the 90 day period before I decide to go back to the other phone? If it's beyond the 90 day period, will I still be able to reactivate the inactive SIM and is there a way for me to do it all on my own like maybe through the Koodo Self Serve website? Hope my questions and description make sense.