Hello jamir225,
It sounds like your iPhone won't connect to a 5 GHz Wi-Fi band, correct? We'd like to help out.
Just to confirm, is a specific Wi-Fi network not showing up only? In other words, are you able to view and connect to other Wi-Fi networks without an issue?
If you're experiencing issues connecting to Wi-Fi networks, the information and steps here may help: If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network
If the issue is occurring only with a specific network, please ensure the Wi-Fi routers and access points are using the recommended settings: Recommended settings for Wi-Fi routers and access points
Also, this page has some great information about Wi-Fi specifications: Wi-Fi specifications for iPhone, iPad, and iPod touch
Thanks!