But how do you tell which Wi-Fi frequency your iPhone is connected to? Most dual-band Wi-Fi routers typically use different but similar names for the 2.4GHz and 5GHz Wi-Fi bands.

If you're concerned about how much data your iPhone is using, here's how to check in the iPhone settings and tips on how to lower your usage.

But how do you tell which Wi-Fi frequency your iPhone is connected to? Most dual-band Wi-Fi routers typically use different but similar names for the 2.4GHz and 5GHz Wi-Fi bands.

Your WiFi may be lagging because your apps may be hogging more bandwidth than they should. Spot them to boost your home network speed.