What Are Custom ROMs And Why They Are Awesome?

If you’re reading this post, chances are you’re new to the world of Custom ROMs For Android™.

As a starter, it can be very overwhelming to grasp a bunch of new technical terms such as “bootloader”, “custom recovery”, “flashing ROM”, Trust me, I’ve been there.

It all started when I accidentally stumbled upon a thread in XDA while looking for tips to bring my old lagging smartphone back to life. And that opened the doors to this parallel dimension of Android-based operating system development to me.

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Thankfully, it pleasantly surprised me with the results and wondered why I didn’t know about this before.

Be warned that you may never again want to go back to using the stock OS provided by your smartphone manufacturer (yes!). Unless it’s a Pixel or OnePlus device.

Coming back to where we started, I’ll assume you’re a beginner if you’re reading this article (although even if you’re not, I’m glad you’re still with me).

Let us take baby steps into the world of custom ROMs for Android and understand what they are and what makes them so cool. Note that in this article we will not cover the processes involved, or try to understand the technicalities; we shall just focus on the basics.

What is Android?

Android is a touch-based operating system developed and maintained by Google for smartphones and tablets. They base it on a modified version of the Linux kernel.

What is Android Open Source Project (AOSP)?

Android Open Source Project (AOSP) is the official repository of Android OS maintained by Google, where the source code in its purest form is available for anyone to download. The goal of AOSP is to provide an open-source framework for developers and manufacturers to build on while maintaining compatibility across various Android devices.

The source code is modified by various OEMs (such as Samsung and OnePlus) to add extra features, customization, or performance optimization for their mobile devices.

Independent developers use the same source code to build feature-rich variants of the Android operating system for various devices. Let us discuss this part further.

What is a Stock ROM?

Stock ROM is the OS that comes pre-installed on a new Android device. The manufacturers build them by tweaking Android OS to give it a unique flavour. Popular examples: Samsung Experience, OxygenOS and MIUI.

What is a Custom ROM?

In simple words, custom ROMs are firmware based on the Android operating system for mobile devices. Usually, they are built to enhance the user interface and/or add features on top of Android in its vanilla form.

Individual Android developers or small teams developed and maintained most of the Custom ROMs. However, these are a few examples of corporates developing custom ROMs.

Why should you install Custom ROMs?

There are quite a few reasons to go for a custom ROM.

• Stock Android: Most smartphone manufacturers ship their devices with custom skinned Android operating systems. And although some might like it, if you’re like me, you would prefer a clean, no-nonsense OS on your device.

• The latest Android on older devices: Most smartphone manufacturers support their devices with OS upgrades through one or two years. That’s hardly one major version upgrade and few security updates. And then some companies do worse. So if you’re stuck with an outdated Android version on an old smartphone that no longer gets official updates from the manufacturer, you may give custom ROMs a serious thought. Plus, custom ROM developers are way quicker at pushing updates than most manufacturers.

• Get rid of bloatware: When you buy a new smartphone, you will notice it comes with a bunch of pre-loaded apps, either from the manufacturer or a third party. What’s worse – most of them are installed as system apps, which means you cannot uninstall them if you want (although lately, I have observed a welcome change in this practice). Getting a custom ROM installed on your device makes sure you have a system clean of unwanted apps–which means more storage space and less RAM wasted.

• Added features/customization: Custom ROMs come with many added features not found in the stock OS of your device. Add to that the endless possibilities of customising the look and feel of your device the way you want. It’s a solid deal.

• Regain control of your device: Most smartphones are deliberately underpowered by the manufacturers. Flashing a custom ROM and getting root access makes sure you get maximum performance from your device. Remember, you also paid for the hardware too when you bought the phone.

Why should you avoid Custom ROMs?

Despite the many advantages custom ROMs bring in, there are still a few points to reconsider:

• Void warranty: Replacing the stock operating system of your device with a Custom ROM usually voids your warranty. (Except Xiaomi Smartphones).
• Potential damage to your device: Installing a Custom ROM is not for everyone. Go for it only if you want to take the challenge and the risk of damaging your phone if something goes wrong.
• Hardware issues: Custom ROMs may be unstable on your device as they were not originally built to support your hardware. There may be abrupt restarts, frame drops or crashes. However, lately, I have noticed that the Custom ROM ecosystem has developed a lot and many of these issues are no longer as frequent.

Are Custom ROMs safe to install?

Yes, custom ROMs are very safe to install as your daily driver. But there are a few things to keep in mind here:

• Source: Download Custom ROMs only from respective official websites or XDA.
• Instructions: Follow the installation instructions provided by the developer religiously. Often the developers don’t explain the process in-depth, assuming you already know it. So, do thorough research before installing your first.
• Expert help: Take expert help if needed. Watch tutorial videos on YouTube, call up an Android nerd you know or raise your query on the XDA forum so that the developer or the fellow members can help you out,

Who should install Custom ROMs?

First, be informed that installing custom ROMs comes with its share of risks, as explained before. You need to be very sure you want this trade-off.

• If your device is still under warranty, replacing the stock OS may void it. Read the warranty document first.
• If your device is no longer under warranty but works flawlessly and you don’t see a reason to replace the OS, then don’t do it.
• I would not recommend someone with limited technical know-how or a penchant for troubleshooting to install a Custom ROM on their own.
• Yet, if you have the passion to try something different and are ready to do all the troubleshooting, if things go wrong, just go for it.

Are custom ROMs legal?

Absolutely. AOSP is an open-source. This means that any modifications made under the open source license are completely legal as long as the new codes being added are not proprietary.

I’m glad you’re still with me on this learning journey. I hope we have been able to understand the basics of Custom ROMs, their merits and demerits, and whether you really need to flash one on your device.

If you have any queries or suggestions, please write in the comments. I would be happy to answer them as that helps me as much as you.

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