Step 2: Input Your Code. Head to your Phone app's dialer to enter your code. When you reach the final character, your device will reveal the Hidden Menu. If you have a Verizon Wireless variant, you'll need to actually "dial" the number after the last character. You can dial the code: # #2486# # for cqa test moto E4 and all Motorola phones. Moto G5, G5 Plus and G6 hardware test Code is *#300#. Motorola speaker-test Code is *# #0673# #* OR # #0289# #. # #4636# # opens all the hidden features for Moto e5, Moto e5 cruise, Moto e5 play and Moto e5 plus. You can also check the microphone of all Motorolla Open Microsoft Edge. Click Settings and more, indicated by the three-dot icon on the right side of the toolbar. Go to More Tools in the drop-down menu. Choose Developer tools to open the interface. Step 2: Locate the Hidden Apps Inside the app-hiding app, you’ll see a list of all the apps that are currently hidden. Locate the app you want to unhide. Step 3: Unhide the Desired Apps Tap on the app you want to unhide, and select the “Unhide” or “Restore” option. An Android hidden menu app is an app that provides access to system settings, menus, and options which are usually hidden from the user. Most Android devices have a hidden menu, often referred to as the Engineering Mode, the Service Mode, or the Secret Menu. To enable the hidden options page, just follow the step-by-step instructions below. Open the Edge browser. Type about:flags in the address bar and press Enter. Press Ctrl + Shift + D. It will enable the hidden diagnostic options. Scroll down to see the new options. In Windows 10, the easiest way to show hidden files or folders is to use the File Explorer’s View options. First, open your File Explorer ( WIN + E ), and go to the folder you think has hidden files. Next, click the View tab, and then check the box next to the Hidden items text. At first you need to go to Settings --> About Phone --> Hardware info. You need to remember numbers from Model number which you find in Hardware info (for example for LG Q7 we have 610). Then open Phone dialer and type *#546368#*numbers from your model#. As you can see you open Hidden Menu in your LG K51. Device test - here open SAAT option and 6CVW.