Dex like experience on your Android device๐
Android Inc has introduced Desktop mode in Android 10 developer options .Here is the steps to use this amazing feature:-
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Requirements:-
โข Bluetooth keyboard and mouse . If you doesn't have. Use this app for temporarily
โขHdmi or cast supported Device
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Procedure:-
1. Turn on Developer Options by clicking on build number 10 times which is available in about phone ->software information
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2. Search for Force desktop mode & Force activities to be resizeable . Now enable both of them.
[Force desktop mode :- Makes your device like desktop on external device
Force activities to be resizeable :- Enables multi window for non supported apps ]
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3. Install
Task bar
&
Second screen
[Task bar :- helps to open recent apps and works like Desktop launcher
Second screen:- helps to adjust screen resolution and dpi for Secondary screen.]
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4.Now you have to send adb command to Second screen (application) .
To do so set up adb
Or
use adb commands in your device itself by
Ladb
Send this adb command
adb shell pm grant com.farmerbb.secondscreen.free android.permission.WRITE_SECURE_SETTINGS
Now open Task bar and give the required permissions . Click on desktop tab and set Task bar has your default Launcher and set primary launcher has your one ui home

&Enable Task bar . If you want more customization u can go through additional settings, appearance & general settings.
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5. Now Open Second screen and create a profile as shown & Change dpi and resolution according to the secondary device. Don't choose like mine they are examples.

6. Now connect your Bluetooth keyboard and mouse or use the app which I have given to connect it to your Android device.
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7. Toggle Smart view from quick panel and connect it to your desired device has monitor.
After connecting Second screen will pop up to choose the profile to load or u can go through manually to load profile.
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All set you can enjoy The Desktop experience๐
Closing and maximizing the app will be difficult๐
Note : issues that are common while using:
1. Status bar hides itself while using Desktop mode & Home screen widget will become smaller.
To fix it Change the dpi from developer options and again change it default value.
Important: There is Slight battery draining.