How to Grant ADB Permissions to Resolution Changer via PC (Step-by-Step Guide)

Android Tutorial • ADB Guide

How to Grant ADB Permissions to Resolution Changer App via PC

A complete, beginner-friendly walkthrough to change screen resolution, aspect ratio (iPad view), and DPI on any Android device without root.

📌 What You Will Learn

Android requires a special system-level permission (WRITE_SECURE_SETTINGS) before third-party apps can modify your display resolution or density. In this guide, you will learn how to grant this permission in less than 5 minutes using your computer and an ADB command—no root required!

Requirements Before You Start

• Android Device: Running Android 7.0 or higher.
• Resolution Changer App: Installed on your device from Google Play Store.
• PC or Laptop: Running Windows, macOS, or Linux.
• USB Data Cable: Good quality original cable to connect your phone to PC.

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Step 1: Enable Developer Options on Android

Before you can use USB debugging, you need to unlock the hidden Developer Options menu on your phone:

1. Open Settings on your Android phone.
2. Scroll down and tap About Phone (or System > About Phone).
3. Find Build Number (On Xiaomi/Redmi: OS/MIUI Version; on Realme/Oppo: Version > Build Number).
4. Tap Build Number 7 times continuously. You will see a toast notification saying: "You are now a developer!".

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Step 2: Enable USB Debugging

Now allow the PC to communicate with your Android device:

1. Go back to the main Settings > tap Developer Options (often under Additional Settings or System).
2. Toggle ON USB Debugging.
3. When prompted, click OK to confirm.

⚠️ Critical Note for Xiaomi / Redmi / POCO & Realme Users:

On MIUI / HyperOS: You MUST also turn ON "USB Debugging (Security Settings)" (requires Mi Account login & SIM card inserted). Without this, the grant command will fail!
On ColorOS / Realme UI: Turn OFF "Disable Permission Monitoring" if available.

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Step 3: Setup ADB on Your Computer

You need Google's official ADB Platform Tools on your PC:

1. Download Google's official SDK Platform-Tools for Windows (Download Link).
2. Extract the downloaded platform-tools_xxxx.zip file onto your desktop or C:\platform-tools.
3. Open the extracted folder, click on the address bar at the top, type cmd and press Enter. This will open the Command Prompt directly in that directory.

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Step 4: Connect Device & Authorize ADB

1. Connect your phone to the PC using your USB cable (select File Transfer / MTP mode).
2. In your Command Prompt, type the following command and hit Enter:
   adb devices
3. Check your phone's screen! A pop-up prompt will appear saying "Allow USB Debugging?".
4. Check the box "Always allow from this computer" and tap Allow.
5. Run adb devices once again. You should now see your phone's serial number followed by the word device (e.g. 988a7c64 device).

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Step 5: Run the Grant Permission Command

Copy and paste the appropriate grant command into your Command Prompt window and press Enter:

Primary ADB Grant Command:

adb shell pm grant com.integer.it.resolutionchanger android.permission.WRITE_SECURE_SETTINGS

Note: If your Resolution Changer app has a different package name (for instance, an iPad view changer tool or custom APK), replace com.integer.it.resolutionchanger with your app's exact package name.

Optional / Additional Permission (If requested by app):

adb shell pm grant com.integer.it.resolutionchanger android.permission.DUMP

✅ If Command Prompt returns a blank new line without any errors, congratulations! The permission has been granted successfully.

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Step 6: Verify and Configure Resolution

1. Disconnect your phone from the computer.
2. Open your Resolution Changer app on Android.
3. Notice that the permission warning banner is now completely gone!
4. You can now set custom resolutions (such as 1080x1920, 1440x2560, iPad 4:3 aspect ratios for gaming like PUBG/BGMI), adjust density (DPI), or apply presets instantly.

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Troubleshooting Common ADB Issues

🔴 Error: 'adb' is not recognized as an internal or external command

Solution: Make sure you opened CMD directly inside the platform-tools folder where adb.exe resides, or add platform-tools to your Windows System PATH environment variables.

🔴 Device Status says 'unauthorized'

Solution: Unplug the USB cable, plug it back in, unlock your phone, and look for the "Allow USB Debugging" pop-up. Check "Always allow" and tap Allow.

🔴 java.lang.SecurityException: Permission Denial

Solution: This is common on Xiaomi/Redmi phones. Go to Developer Options and ensure "USB Debugging (Security settings)" is toggled ON.

🎉 You're All Set!

You have successfully unlocked full control over your display resolution without rooting your phone. If this guide helped you, feel free to share it with friends!