Originally Posted by
Trees Why not just put the 3 SIM in the iPhone X? You can still iMessage with people, and if someone needs to call they can use Facetime, Skype, Hangouts, etc. That's exactly what my daughter does when she's in UK. When visiting home, she just swaps back to the Verizon SIM, and then back in UK, goes back to the 3 SIM. This process has worked well with an iPhone 6 and now most recently an iPhone 8.
She's also traveled throughout Europe with a Verizon iPhone 6 and a 3 SIM, and no issues. You'll want to check your specific 3 plan and see what coverage it has for the countries you plan to visit.
The above may help to simplify things and not require you to carry two phones around. You could still have the iPhone 6S as a backup phone, just not turned on. Appreciate the desire to save money on the Verizon side of things. Is it possible to suspend your account or go to a lower cost plan while your'e in London?
I will definitely check if I can suspend my plan or put it on travel hold or something!
I don’t know why I’m paranoid about putting the 3 sim in my X, for non iPhone people to text or call and stuff; to be honest I may suck it up and go that route!