Unable to activate phone on iPhone 7

Hi DennisBri,

to activate your your iPhone seven try these things.

1. Press the Power button (top-right edge) to power the iPhone on. ... 
2. Press the Home button to unlock your iPhone.
3. Tap the screen to choose language then tap the country or region.
4. Tap Set Up Manually. ... 
5. Tap the Wi-Fi network, enter the Wi-Fi password then tap Join. ... 
6. From the Data & Privacy screen, tap Continue.

Did you buy a used device?

And exactly what is the problem you're having in trying to activate it?