If your Verizon 5G phone is slower than 4G LTE, toggle off 5G to speed up the device
Most of Verizon’s 5G phones won’t let you disable 5G support although you can try. Go to Settings > Connections > Mobile Network > Network Mode. If you see an option to select LTE/CDMA instead of 5G/LTE/CDMA, you can disable 5G on your device. As for the iPhone, go to Settings > Cellular > Cellular Data Options > Voice & Data and tap on LTE to disable 5G.
So how do you know which 5G network your iPhone is on? If you are a Verizon customer, look at the status bar on the upper right of your iPhone screen. If you see the small letters UW on the 5G icon, congratulations! You’re connected to Verizon’s speedy UltraWideband 5G network.