The latest addition to the budget line-up of Samsung is the new Galaxy A21s. It has a Quad-camera setup at the rear, infinity-o display, running One UI, and is powered by a monstrous size big battery. Looking for a custom ROM for your Samsung Galaxy A21S? then you are in the right place. On this page, we have shared all the supported custom ROM for Samsung Galaxy A21S.
To install the custom ROM on your device, you must first unlock the bootloader and should have a custom recovery like TWRP or any unofficial one. If you already have one, then you can head over to the list to find which is the best custom ROM suits for your Samsung Galaxy A21S to run as a daily driver without compromising the battery or performance.
![List of Best Custom ROM for Samsung Galaxy A21S [Updated]](https://www.getdroidtips.com/wp-content/uploads/2020/05/Galaxy-A21s.jpg)
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Samsung Galaxy A21S Specifications
The Samsung Galaxy A21s is having Samsung’s new Exynos 850 octa-core chipset coupled with RAM options from 3 to 6 GB. The phone has storage options to choose between 64 and 128 GB which is expandable by a MicroSD card up to 512 GB. The phone has a massive 5000 mAh of battery which can be charged using a 15w fast charger that comes in the box. It has a 3.5mm headphone jack as well.
The Samsung Galaxy A21s has a 6.5-inch HD+ 720p resolution super AMOLED display with a punch-hole camera cut out which Samsung calls its infinity-o display. The phone has an aspect ratio of 20:9 and the screen-to-body ratio is around 83%. It has a pixel density of around 270 Pixels per inch (PPI). The phone weighs around 192 grams due to its big battery and thickness is around 8.9mm.
The phone runs on Android 10 based on Samsung’s One UI 2.0. It has features like dark mode, Android 10 gestures, and better one-handed usage. Galaxy A21s features a rear-mounted fingerprint sensor along with a facial recognition system for the security of the device. It also supports DUAL nano-SIM for connectivity.
The Quad-camera setup of the Galaxy A21s consists of a 48 MP main camera with PDAF, then there is an 8 MP ultrawide sensor, followed by a 2 MP macro and 2 MP depth sensor along with LED flash. It can record videos at 1080p @ 30fps. The phone has HDR and Panorama shooting options as well. At the front, there is a 13 MP selfie shooter in a punch-hole design, it can also record videos at 1080p @ 30 fps.
The Galaxy A21s has Bluetooth 5.0, WIFI 802.11 b/g/n, and GPS. It comes in Black, White, Blue, and Red color options. The phone is said to be priced around GBP 179 (roughly Rs. 16,500).
What is Custom ROM?
Before we head down, you can learn about the custom ROM; well, with the word of XDA, Custom ROMs are one of the best things about Android. By installing custom ROM, you get the benefits such as an improved battery, better performance, easy root access, customization, themes (not all supported), and many more.
Best Custom ROM for Samsung Galaxy A21S
You can follow the guide on the same link below on how to install the custom ROM on Samsung Galaxy A21S.
Android 13:
Regarding the Android 13, it seems that the Android 12’s successor has plenty of additional features and improvements to its predecessor. We’ve already seen and used the major UI and design element changes in Android 12 last year, known as ‘Material You.’ This materialistic theming design enhanced the Android user experience from the minimal subtle look, rounded corners, improved pop-ups, etc.
Whereas the improved scrolling screenshots, optimized one-handed UI mode, better privacy & security features, improved app notifications, per-app basis language preferences, app permissions to send notifications, BT LE Audio support, auto theme icons, updated now playing widget, etc. Users will also find intuitive QR scanner support, enhanced silent mode, tap-to-transfer media controls, multiple profiles for NFC payments, and more.
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.
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 that 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 Galaxy A21s 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 Galaxy A21s device.
Download ROM Here – Lineage OS 18.1
Download ROM Here – Lineage OS 20
CrDroid OS:
CrDroid OS is a new custom ROM based on AOSP/ Lineage OS built from scratch by adding customization options from AOSPA, Lineage, SlimROM, crDroid OS, and many other great ROMs out there. The ROM brings a lot of customization options along with a Pure Android Experience.
ArrowOS:
ArrowOS is a new Custom ROM and it is AOSP inspired open-source project started with the aim of keeping things simple, clean, and neat. The ROM brings almost the same feature which is very useful for ROM customization and in the end aiming to deliver smooth performance with better battery life.
Descendant OS:
Beautiful firmware with a small world of customization, but still it is there. Firmware can be customized to suit any taste and color.
Pixel Experience ROM:
As the name suggests, ROM brings the real Google Pixel Experience ROM on Samsung Galaxy A21s. 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.
I hope this guide was useful to install the best Custom ROM on Samsung Galaxy A21S.