Hey there Bremmo95,
We'd like to help by taking a closer look with you. The first thing we wanted to point out is that you'd be unable to combine other offers with Apple TV+ if you're already using one. This detail, along with the terms/conditions of this offer, can be found here: Apple TV+ Promo Terms and Conditions
Let's confirm the following details to better understand what's happening:
- Please confirm exactly what happens when you try to redeem it on your new iPhone.
- As part of the requirements listed in the link above required the latest version to be installed, we wanted to let you know the latest version is iOS 14.2. You can check which version is installed by going to Settings > General > About. Just in case, here's how to first back up, then update: Update your iPhone, iPad, or iPod touch
- Let us know if you've already redeemed an Apple TV+ one year offer.
We look forward to hearing back from you, and take care!