Hey ata70,
That's nice of you helping out a friend who is having trouble connecting their iPhone to Wi-Fi after setting up their iPhone. I can help point your friend in the right direction.
It sounds like your friend is on step 3 of setting up the device:
You need to connect to a Wi-Fi network, a cellular network, or iTunes to activate and continue setting up your device.
Tap the Wi-Fi network that you want to use or select a different option. If you're setting up an iPhone or iPad (Wi-Fi + Cellular), you might need to insert your SIM card first.
Get help if you can't connect to Wi-Fi or if you can't activate your iPhone.
This step is from Set up your iPhone, iPad, or iPod touch
As seen in that step, if your friend can't connect to Wi-Fi, try these resources for help:
If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network
If you can't activate your iPhone
These steps can help your friend connect to Wi-Fi, but if your friend is still having trouble then you can bypass this and activate the device using iTunes instead:
If you still can't activate, here's how to activate your iPhone through iTunes instead:
- Make sure that you have the latest version of iTunes.
- Check that your computer has an Internet connection.
- Open iTunes on your computer. With the cable that came with your iPhone, connect your iPhone to your computer.
- Wait while iTunes detects and activates your iPhone:
- If iTunes shows, "Set up as New" or "Restore from Backup," it means that iTunes activated your iPhone.
- If an error in iTunes says that the SIM card isn't compatible, contact your carrier.
These steps are from the same article posted above:
If you can't activate your iPhone - Apple Support
Take care!