Can an unlocked t-mobile iPhone 6 be used with Rogers?

Can an unlocked t-mobile iPhone 6 be used with Rogers? - 1

Added (1). Can it?

Added (2). I just moved to Canada and have a t-mobile iPhone 6 which I will be getting unlocked. Will it work with rogers? I know they are both GSM.

My iPhone 6 (iOS 9) is showing the wrong amount of minutes next to updates on my lock screen?

For example, if I got a text 9 minutes ago, instead of saying "9 min" next to the text (on my lockscreen), it will say "3 min" instead.

I don't know why it's started doing this. I think it's probably a small problem with iOS 9 or I accidentally messed something up when I created a new iCloud account last week, which is around when this started.

Does anybody know how to fix this?

I can't close a pop up on my iPhone 5c and it's making using it inaccessable

I downloaded an app, and a pop-up saying "This app would like you to turn on notifications" etc etc came up. I can't press the "ok" or "close" button, no matter how hard I try. I rebooted it and when I unlocked the iPhone the pop-up still came up before I had time to do anything. I can't open any apps with the pop-up in the way and it's quite annoying. I don't know what to do about it.

IPhone, every time I open app it goes black?

I recently got the 6 plus about 2-3 weeks ago. Every time I open an app the app pops up then the screen goes black. After the screen goes black it stays that way and then I click the home button and it goes away then I click on the same app and it's fine. I've restarted my phone and it still does it. It doesn't just do it on apps that I've downloaded. It does it on my messages, and my clock, etc, apps that have been programmed into my phone.