Not from the iPhone itself without first making a change on your router. You would have to do one of three things.
1. Create two separate SSIDs (networks) with different names and set one of them for 2.4Ghz and the other for 5Ghz. Allow your iPhone to automatically connect to the 5Ghz network...
To add insult to injury, Verizon experienced a service outage in central and northwest Arkansas Friday where all cell and data was nonfunctional for several hours. A good friend of mine who works at the Little Rock Apple store said it just added to the chaos since no Verizon iPhone could be...