Change of sim / new provider
I am looking to change phone providers. I will be keeping my mobile number and with my PAC merely changing sims and providers. I just wanted to check if there is anything I will lose on my phone - I am keeping my current phone too. I am assuming it is as simple as swapping over sims and everything will be there as normal ie contacts etc. I also assume that imessenger as it's tied to my phone number and email address that again this will all work as pre swap of sim?
iPhone 6 Plus, iOS 12