How to Install Android 16 on OnePlus 12R / Ace 3 [Download Link]

If you’re using a OnePlus 12R and OnePlus Ace 3 and want to breathe new life into your device, installing an Android 16-based custom ROM is a solid move....

Mohammed Huwais

Last updated on August 9, 2025

Mohammed Huwais

Author

I started my career as a blogger in 2014 and also worked on an Android niche platform to gain extra income. I cover the topic on How to guides, software updates, Custom ROM updates and also product review. I'm 24 years old, completed MBA (Master of Business Administration) from Sikkim Manipal University.

OnePlus 12R Overview

The OnePlus 12R / Ace 3 comes with a range of impressive specifications tailored for users seeking a powerful yet slightly more accessible alternative within the OnePlus lineup. Here’s a summary of its key features:

Operating System: Android 14-based OxygenOS 14, ensuring a smooth and user-friendly interface with the latest Android features.

Display: A 6.78-inch 1.5K (1,264×2,780 pixels) LTPO 4.0 AMOLED screen. This display offers high resolution and adaptive refresh rate capabilities for efficient power usage and fluid visual experience.

Processor: Powered by the Snapdragon 8 Gen 2 chipset, which is known for its high performance and efficiency. This is the same chip used in the previous OnePlus flagship, ensuring top-tier performance.

RAM: Up to 16GB of LPDDR5x RAM, providing ample memory for multitasking and demanding applications.

Camera Setup:

Rear Cameras: A triple-camera setup including a 50-megapixel primary sensor with a Sony IMX890 sensor and an f/1.8 aperture, an 8-megapixel ultra-wide-angle camera with a 112-degree field of view, and a 2-megapixel macro camera with an f/2.4 aperture.
Front Camera: A 16-megapixel selfie camera with an f/2.4 aperture, designed for clear and detailed self-portraits.

Storage: Options include 128GB of UFS 3.1 storage or 256GB of UFS 4.0 storage, offering fast read/write speeds for quicker app loading and file transfers.

Connectivity: While it supports the same connectivity options as its flagship counterpart, the OnePlus 12R / Ace 3 uniquely offers Bluetooth 5.3 for enhanced wireless connectivity.

Battery: A 5,000mAh battery supporting 100W SuperVOOC wired charging, promising rapid charging times. However, it lacks wireless charging capabilities.

Physical Dimensions: The phone measures 163.3×75.3×8.8mm and weighs 207g, making it a sizable yet manageable device in hand.

Android 16 Features:

Android 16 introduces Material 3 Expressive, a refined evolution of Google’s design language for smartphones and tablets. While it doesn’t completely reinvent the interface, it represents one of the most noticeable user-facing changes in the OS. Rather than a dramatic visual overhaul, Material 3 Expressive enhances the foundation laid by Material Design 3 by introducing smoother, more dynamic animations, larger touch targets, and bolder typography.

This update arrives at a perfect moment. Material Design 3, first introduced with Android 13, had begun to feel dated. Material 3 Expressive breathes new life into the interface while preserving the familiar look and feel users have grown comfortable with. Instead of overhyping the changes, Google’s own animations showcase the polish and fluidity of this next step in Android design.

Android 16 introduces a wealth of new features, system optimizations, and UI refinements. Some of the highlights include:

Live Notifications: Track real-time activities like deliveries or ride status with persistent, interactive notifications.
Low-Light Camera Enhancements: Improved software-based night photography.
Pro-Grade Media Support: Includes advanced codecs and battery-efficient audio processing.
Desktop Mode for External Displays: Better support for multi-window UI on monitors and tablets.
Accessibility Upgrades: Features like outlined text and improved input customization.
Performance Boost: Enhanced power management and reduced background CPU usage.

These updates aim to improve user experience across different types of devices, including foldables, tablets, and standard phones.

Although Android 16 is rolling out first to Pixel devices, many brands like Xiaomi, OnePlus, Samsung, Realme, and others will follow soon. If you’re impatient, a custom ROM is the best way to get Android 16 today.

What Works & Known Bugs:

What’s working?

Everything seems to be working fine.

Known issues?

If you spot any bugs, report them along with proper logs to the developer.

Before You Begin: Requirements:

1. Backup Your Data:

Always back up your device before flashing any ROM. This prevents data loss if anything goes wrong. Backup guide here.

2. Battery Level:

Charge your phone to at least 50% to avoid shutdowns during the flashing process.

3. Download ADB and Fastboot Binaries:

You can skip this part if you have already installed TWRP Recovery on your OnePlus 12R / Ace 3. For those who haven’t, ADB and Fastboot commands (platform-tools) are required to boot your device into bootloader mode, allowing you to perform the necessary flashing operations. ADB (Android Debug Bridge) establishes a connection between your device and computer, while Fastboot is a more advanced command-line utility for flashing and modifying Android devices.

You can download the ADB and Fastboot Binaries (Platform-Tools) here.

4. Download USB Drivers:

You’ll need the appropriate USB drivers to ensure a successful connection between your OnePlus 12R / Ace 3 and your computer. These drivers enable file transfers, flashing, and other operations between your devices.

You can download the latest OnePlus USB drivers here.

5. Unlock the Bootloader:

Unlocking the bootloader of your OnePlus 12R / Ace 3. is essential before you can install any custom ROM. Make sure to follow OnePlus’s official instructions for unlocking the bootloader. Unlocking the bootloader will wipe your device, so back up your data beforehand.

6. Install TWRP Recovery:

You must install TWRP Recovery on your phone to install any custom ROM on your device. After unlocking the bootloader, follow our guide to install TWRP Recovery on your OnePlus 12R / Ace 3.

7. Download Android 16 ROM:

You can download the Android 15 custom ROMs for the OnePlus 12R / Ace 3 from the links below:

OS	Download Link
Project Infinity X	Download
Lunaris AOSP	Download

8. Download Android 16 GApps:

Most AOSP ROMs don’t come with Google apps. You’ll need to flash Android 16 GApps separately.

Download Android 16 GApps

Note: Flash GApps right after flashing the ROM. Don’t reboot in between.

Warning!

GetDroidTips is not responsible for any issues that may happen to your device if you flash it on another device and brick it. Do it at your own risk.

Installation Guide: Step-by-Step

Connect your device to the PC via a USB cable. Make sure USB Debugging is enabled.
Then, go to the platform-tools folder, type CMD in the address bar, and hit Enter. This will launch the Command Prompt.
Execute the below command in the CMD window or enter recovery mode using the Volume and Power button combination to boot your device to TWRP Recovery:
```
adb reboot recovery
```
Now head to the Install section and navigate to the downloaded vendor and firmware. Perform a right swipe to flash it.
If you want Google Apps as well, you need to flash it at this instance. Go to Install, select the GApps ZIP file, and perform a right swipe to flash this file.
When that is done, you may reboot your device. Head over to Reboot and select System.

The first boot after installing a custom ROM may take a bit longer than usual, so don’t panic if it seems slow. After the device boots, you will need to set it up as a new device, just like when you first got it.

Final Words

By flashing Android 16 on your OnePlus 12R / Ace 3, you’re extending its life and unlocking modern Android features that OnePlus may never officially provide. While this is an unofficial AOSP build, early reports suggest solid stability. That said, bugs may still appear, so always report them with logs to help developers improve the experience.

If you have questions or run into issues during installation, feel free to drop a comment. Enjoy your fresh Android 16 experience!