I'm going traveling to Australia and Canada starting next week for a year. I'll be getting SIM cards over there and was wondering if I can just put them in or if I'll have to change any region settings on my phone. I wanted to leave all the settings the same as they are now so I can just carry on using the UK App Store and my Apple Music account. But I wasn't sure if everything was set to UK if that would possibly affect anything with a carrier from another country. Thoughts?