Connect to a secure Wi-Fi network with your iPhone or iPad
Secure Wi-Fi networks are password-protected and have 
by their names.
- Go to Settings > Wi-Fi, and make sure Wi-Fi is turned on.
- Tap the name of the secure Wi-Fi network you want to join.
- Enter the password for the secure Wi-Fi network, then tap Join. If you can't tap Join, the password you've entered is incorrect.
After you join the network, you'll see 
next to the network and 
in the upper-left side of your display or the upper-right corner on an iPhone X. If you don't know the password to the Wi-Fi network, contact your network administrator.
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