*#*#4636#*#* Displays information about the phone, battery, and various network statistics.
Android code: *#*#4636#*#*
This code will open up a menu that shows information about your phone's data usages. Here's how you can retrieve deleted text messages on your iPhone.
If you would like to know some more detailed information and test your android device then from your phone dialer just dial *#*#4636#*#* it will show up results like Phone Information, Usage Statistics, Battery Information, and Wi-fi Information.
A decoy app is a sneaky on-device tool that lets anybody hide secret photos, videos and messages, under the cover of an innocent-looking icon.
First, tap on your Settings icon and choose Apps from the menu. If things look different on your device, just go for the tab that deals with your phone's apps. From there, you should have access to a See all apps option. Tap it and you'll see all your available apps.
Key hardware info: *#0*#
When you enter *#0*# into the phone's dialer, the device enters service mode and brings up a diagnostics menu. From this screen, you can view and run multiple diagnostics to test device hardware like buttons, sensors, and cameras.
The code #0# is a service mode code for Samsung Android phones. This code allows you to access various hardware tests and diagnostic tools on your device. By entering this code in the dial pad, you can test the functions of your phone's display, touch screen, camera, speaker, and other components.
Security of Android Smartphone codes : Code ## 002 # ~ Deactivates all forwarding. Code * # 21 # ~ To know whether message or call has been diverted or not.
##002# - If your voice call or data call, or SMS call has been forwarded, dialling this USSD code will erase them. *#21# - By dialling this USSD code, you would get to know if your calls have been diverted somewhere else or not.
2. *#*#7780#*#* (Run a Factory Reset) If you don't want to run a hard reset, this is the next best thing. Similar to a factory reset, this code will simply delete all application data from your device, as well as any applications.
Code to check if phone is tapped: *#21# Code to show unknown connections and tracking (for Android): *#*#4636#*#* or *#*#197328640#*#*
Click on the home screen settings. It will navigate you to the Hide apps menu; tap on it. Here, you will see the hidden apps that are not showing in the app list. If the hidden screen doesn't show any apps or the Hide apps menu is missing, it means no apps are hidden in your device.
As mentioned, the apps themselves look like calculators, flashlights, and other utilities. Some of them won't even show up in a list of recently-used apps. Even if you find a decoy app, you're not going to be able to open it. These apps are protected by passwords, secret PIN numbers, and even biometrics.
That said, Android does offer to let you create secret folders on your phone that do not show up in other apps. These folders let you store photos, videos and other media without these files showing up in other apps like Twitter or WhatsApp. Here's how to do that.
Open File Explorer from the taskbar. Select View > Options > Change folder and search options. Select the View tab and, in Advanced settings, select Show hidden files, folders, and drives and OK.
User settings and app configurations are often saved as hidden files, for example. Programs need these files to run, but users don't really need access to them. Hidden file caches are common as well, temporary stores of data to speed up software operations.
Voxer - Best Private Chatting App
This one of the top secret texting apps for iPhone and Android is the most chat-secure app to use and it also makes your conversations completely untraceable. You can easily acquire free phone numbers from different countries and protect your real information.
View Hidden Text on Windows
To view hidden text, go to the Home tab and click the Show/Hide button in the Paragraph section of the ribbon. This action displays your hidden text as well as formatting symbols.