No, it is not because the iPhone 7 is an older model; the issue is likely a temporary server block, a phone number verification limit, or a device limit on creating new accounts.
Try these steps to fix the problem:
- Create the Apple account on the web: Use a computer, tablet, or another phone to visit Apple Account Website and create the new Apple account there. Once it is successfully created, go back to the iPhone 7 and sign in with the new account.
- Check your network: Switch between Wi-Fi and mobile data, or turn off any active VPNs, as Apple’s security systems sometimes block account creation on specific network connections.
- Wait and retry: If you tried entering the phone number multiple times quickly, Apple might have temporarily rate-limited that phone number or device. Waiting a few hours usually clears the block.
- Set up via Family Sharing: If you already have an Apple ID, you can set up Family sharing from your own device to create a dedicated child account safely without triggering verification errors on the older phone.