List of Best Custom ROM for Google Pixel 3a [Updated]

If you want to install any Custom ROM for Google Pixel 3a device then this guide is for you. Here we will share a complete list of all the compatible Custom ROMs for Google Pixel 3a model. Using an Android OS is quite simple and fun to gather experience. While if you’re a developer, due to the AOSP nature of OS, it’s also easy to build any Custom ROM based on kernel source. The Custom ROM offers too many customizations and functionalities to the system so that the user can get a better experience. You can’t really get that many features on a Stock ROM by any smartphone OEMs. However, due to the continuous development process, third-party firmware may contain bugs or may be unstable.

In case, you are getting bored with the stock UI and want to get a taste of the new Custom ROM with lots of features, installing third-party firmware can fulfill your demands possibly. Here in this article, we will share with you the details of Stock ROM, Custom ROM, and a list of best Custom ROMs as well.

Google Pixel 3a Specifications

The Pixel 3a comes with a 5.6-inch OLED Full-HD+ display. It’s powered by the octa-core Qualcomm Snapdragon 670 SoC coupled with 4GB of RAM and 64GB of internal storage. However, there is no external storage expandability option available in this device. The Pixel 3a device offers a single Nano-SIM (3G/4G) slot but it also offers the dual-SIM option via an E-SIM. You will get benefitted completely if your region carrier supports the E-SIM feature.

List of Best Custom ROM for Google Pixel 3a

The handset runs on the latest stock Android Pie UI and it’s also eligible to get the Android Q Beta update as well officially. It’s worth mentioning that due to the Google product, Pixel series devices get official major Android updates and security patch updates at first. Google will release the Android Q Stable official update in a couple of months and this device will receive the update as well.

The handset features a 12.2MP primary camera with a Sony IMX363 sensor. While at the front, it has a single 8MP selfie shooter. Google Camera also features Night Sight, Portrait, Google Lens, Super Res Zoom, and more. The Pixel 3a packs a 3,000 mAh battery with an 18W Type-C fast charger.

Before going to the installation and download part, take a look at the difference between Custom ROM and Stock ROM at first.

Android Stock ROM

When you purchase a brand new Android device, it comes with a “Stock ROM” preloaded. It’s also known as the “Stock Firmware”. The smartphone manufacturer defines limited features and options to the system. It doesn’t come with too many functionalities which makes it more stable and fluid. The official software updates keep it more secure and up-to-date. However, you really can’t the system interface freely in a Stock Firmware. It requires system permissions and root access. In this case, you will require a Custom ROM.

Read Also: Difference between Stock ROM and Custom ROM

Custom ROM

Due to the Android’s, open-source platform developers can build their own operating system images for Android phones and tablets with customizations. This is known as Custom ROM or Custom Firmware. You can also call it third-party firmware. Custom ROM replaces your Stock Android OS which comes with your smartphone or tablet. It does have a kernel source so that the developers can include or customize any app or feature easily. Most of the Custom Firmware comes with no-bloatware and almost relates to the Stock UI but is fully customizable. Even by rooting your device, you can do a lot of things on your Custom ROM.

Though most of the time there are some bugs available in a Custom ROM which can be fixed by developers. But due to a lot of customizations or tweaks, bugs arise again after a few updates.

List of Best Custom ROM for Google Pixel 3a

Here is the list of Best Custom ROM for Google Pixel 3a. in order to install any Custom ROM on Google Pixel 3a, you need TWRP Recovery installed on your device. Once you have installed TWRP, you can proceed to install Custom ROM or any mods on your Google Pixel 3a device.  Here is the guide the complete step-by-step guide on it.

If you have already installed the TWRP Recovery on your Google Pixel 3a, then you can try some of the best Custom ROMs available in the market currently. Though, as we mentioned earlier, most of the Custom ROMs are buggy and unstable. You can try it for once but you can’t use it as your daily driver. However, it really depends on you whether to use a Custom ROM for long or not. Let’s take a look.


GetDroidTips will not be responsible for any internal/external damages to the device that may happen while/after following this guide.


Android 14:

Android 14, Google’s fourteenth major iteration and the 21st version of its renowned operating system, was unveiled to the public on October 4. The pioneering devices graced with this fresh release were the Pixel 8 and Pixel 8 Pro, underscoring Google’s commitment to keeping its flagship devices at the technological forefront.

This latest installment boasts a plethora of enhancements and innovative features. Among the standout additions are a revamped lock screen, a more intuitive system share sheet, and a redesigned battery-saving mode. Users can also delight in the convenience of drag-and-drop capabilities during app switches, a groundbreaking Ultra HDR support for media, and the visually striking Material You-themed settings toggles. With AI-generated wallpapers and a new monochromatic theme, Android 14 not only refines functionality but also offers a refreshed aesthetic experience.

Download ROM Here


Android 12:

Android 12 is all about improved personalization and revamped user interface that changes the way to bring more dynamic expression and a whole new design element. It’s a successor of the last-gen Android 11 which was basically focused on the privacy and security of the user data. While the Android 12 not only focused on privacy features but also on visual treatment.

Download ROM Here


Lineage OS:

Lineage OS is the legacy of the old famous custom firmware known as CyanogenMod or CM. The company behind Cyanogen.Inc has withdrawn the popular Android mod, CyanogenMod which left many of its users disappointed. Few believed that the legacy of CyanogenMod will be taken forward by a new Android mod, however, it was all uncertain. It is amidst such chaos that Lineage OS was introduced and definitely it gave back everyone the answer concerning Android mod.

Lineage OS is one of the best custom ROM for any Android smartphone. Lineage ROM for Google Pixel 3a comes with a lot of features such as Customizable Status bar, Theme, Resizing Nav bar, Nav Bar color, and customization, Quick Toggle feature, and more other features.

You can follow the link to Install Lineage OS for Google Pixel 3a device.

Download ROM Here – Lineage OS 19.1

Download ROM Here – Lineage OS 20

Download ROM Here – Lineage OS 21



BlissROMs comes with a wide selection of customization options from around the Android community. Apart from that, it has also added some of its own unique features to the ROM. The stable build of this ROM is based on Android 10 (or Android Q) and brings with itself all the goodies that the said Android build has. Apart from there, you also get some Bliss exclusive features.

Download ROM Here



AOSiP OS stands for the full form of Android Open Source illusion Project.  It is a quality custom ROM based purely on Google AOSP source since the 6.0 release. Twisted with the latest features and blended with stability. We strive for perfection and it shows.

Download ROM Here



AICP also stands f0r Android ICE Cold Project which is an aftermarket firmware based on Android Open Source Project. The ROM is first developed for the HTC Desire HD device in the year 2012. Since then AICP has evolved into a mature ROM with the BEST community that you can find! Currently, the ROM is based on Lineage OS with some tweaks from AOSP.

Download ROM Here



MIUI 15 is the latest iteration of MIUI ROM developed by Xiaomi company. It is also used in many devices as a custom ROM. It is developed based on the Android Operating system. The ROM comes with many features such as Theme support, Customization of the Status bar, Mi Launcher without an app drawer, and many other features.

Coming Soon..


Pixel Experience ROM:

As the name suggests, ROM brings the real Google Pixel Experience ROM on OnePlus 6. It has all the features and applications which come out of the box with the Google Pixel smartphone. Now you can experience the real Pixel Smartphone with this ROM.

Download ROM Here


Bootleggers ROM:

Bootleggers ROM is an aftermarket firmware based on Ground Zero Open Source Project (GZOSP) and brings custom features with the most useful apps on your device, with the goal of “Making you feel like 家”. Using the stability and compatibility of GZOSP, this ROM is also packed with some custom wallpaper (Dawn by fxckingdeathwish), ringtones, and fonts, to bring to your device a more fresh look, also with a selection of icons, header packs, and wallpapers (on ShishuWalls app).

Download ROM Here



DotOS is a simple abbreviation of the term Droid On Time Operating System. It is developed by a community and team members: Ganesh Varma and Kuber Sharma. The ROM brings many new tweaks and features and also merged some features from Best Custom ROM.

Download ROM Here


Dirty Unicorns ROM:

Dirty Unicorns ROM is one of the best custom ROM which is built from AOSP. The project was originally started by Alex Cruz aka Mazda in the year 2012. The ROM was first based on AOKP and later moved to the AOSP tree to continue the work for a long run.

Download ROM Here


That’s it! I hope you have installed the Custom ROM for Google Pixel 3a. Leave a comment or feedback down below. Thank you!.

Back To Stock ROM?

Want to revert back to Stock ROM, Check out this tutorial on How to Install Stock ROM on Google Pixel 3a

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