my iPhone XR gives me a "unable to activate" error message

lupe114 wrote:

how can I activate my iPhone XR it keeps giving me a "unable to activate" error message.

If you can't activate your iPhone or iPad (Wi-Fi + Cellular) - Apple Support

You are going to need to get with your carrier to provide them with some information. In turn, they will likely provide you with the update that your phone needs to work with their system.