This article is an instruction on how to get the mac address on a Grandstream WiFi phone model WP820.
Step 1 - Get to the menu on the phone
Step 2 - Go to the Status option
Step 3 - Click on the Status Option
Step 4 - Move down to the Network Status
Step 5 - Click on the Network Status
Step 6 - Scroll Down to the Mac Address
Step 7 - Write down the Mac address.