Apples introduced a feature in the iOS 14 update called ‘Back Tap’, it allows iPhone users to launch Google Assistant on their device and other apps by double-tapping or triple-tapping on the back of their device. The feature generally is cool and allows for quicker app access and information’s via Google Assistants and the Android community has taken a liking to it. You can now enable and use the back tap feature on any Android device.
The Back tap feature was spotted in the Android 11 developer preview builds on Pixel devices – Google was literally testing the back tap feature on Pixel devices but the feature didn’t make it to the final build. However, Android users can still enable the back tap feature on their devices using an app named Tap, Tap.
Tap Tap app is a port of the double-tap/back tap feature. It allows Android users running Android 7 upward to double tap on the back of their device to launch Google Assistant and any other app assigned to use the feature. The app is developed by an Xda developer Quinny899 and is currently in beta. This means you may encounter a few bugs but if you understand this proceed to the installation guide below.
Steps To Launch Google Assistant by Tapping the Back of Your Phone
To use the back tap/tapping the back of your phone to launch Google Assistant, we’ll be downloading and installing Tap, Tap app. This app is not available on the Google Play store but you can easily get it on your phone using the link below. Follow the simple step by step below to activate the back tap feature on your Android device.
Step 1. Download Tap, Tap app from XDA Forum using the link here.
Step 2. Once the download is complete, tap on the app installation file and install (if you’re asked to allow unknown source installation, enable it).
Step 3. Launch the app once the installation is complete.
Step 4. On the app main interface, toggle the enable gesture option and grant all permissions that the app requires.
Step 5. Now, tap on the ‘Double-Tap actions’ options

Step 6. From the action list, you’ll find ‘Launch Assistant’ and ‘Screenshot.’ If you didn’t see both options, tap the add action button to add.
Step 7. Under the ‘Launch Assistant’ action, tap on the ‘Add Requirements.’

Step 8. Another list of options will be displayed, tap on the plus (+) icon to add ‘Display On’ option.

Step 9. Return to the previous page and ‘Add Requirement’ for the Screenshot.

Step 10. Select the ‘Display Off’ option for Screenshot on the add Requirement menu.

That’s all you need to do for the settings. If you’ve followed the steps correctly, then, you final result should look like the image below.

Now, you are done. you can now double tap on the back of your phone to launch Google Assistant. Remember to remove your phones cover if it’s wearing one.
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Nice post
Thank you Sir