I have two access points for the same network in my house, with some overlap. One runs on 2.4GHz only, and one transmits both 2.4GHz and 5GHz.
I have an iPhone 5 (running iOS 6.0.1), which supports the 5GHz band and I'm wondering if there is a way for me to determine which frequency band it is connected to.
Best Answer
You can not tell from the iPhone directly (as of iOS version 7 native). You should be able to tell via the wireless router your connected to in it's logging functions, WiFi client list or some similar mechanism within the router. I can't provide you an exact process as every router is different. This answer assumes you do not want to JailBreak your iPhone. If you are not adverse to doing so there may be an app in the Cydia app store that will show more meaningful information with regard to WiFi frequency information.
You can however detect what cell tower frequency your phone uses by using Field Test mode. This will special mode allows users to find out a range of information about the phone’s connection to the network. In particular, the information displayed in the Field Test mode allows users to discover exactly which tower their phone is connecting to and which frequency band (WiFi) the signals are being sent on.
To access this mode:
*3001#12345#*
in the phone’s keypad and press dial. This will bring up the Field Test menu.