Not Tokyo Apple specific, but as a somewhat frugal techie I'm admiring your iPhone 6 released 2014 is still in use and would say you might want to upgrade to this year/next year's model to get 5G network access if in the US as carriers phase out 3G https://swappa.com/blog/3g-network-s...0December%2031. That's just from a fundamental phone/sms emergency calling/alert tool perspective. I wouldn't go with iPhone 13 or 14 unless you have a need for a physical sim (13, as 14 US models went to an electronic sim instead of physical card) or prefer lightning cables (they'll still be around for 4+ years).