Is it still possible to activate an iPhone 6s on Verizon
You can check the link below with your device details to get details on if the phone can be activated on our network.
https://www.verizon.com/sales/nextgen/byod.html
-Meg
Maybe, but because the iPhone 6s doesn't support 5G at all, you're going to have a problem anywhere there's 5G, because from what I can tell, any larger cities have mostly 5G cells on the towers. If you're in a rural area where it's 4G LTE only and you don't travel much, could be OK. I'd run the IMEI on the compatibility checker: