Android is the world's leading mobile operating system. It also has one of the most active developer communities. Since Google has made Android open-source, it means the source code of the operating system (OS) itself is available to developers, and anyone can make their own version of Android if they know what they are doing.
This is the reason why the Android OS varies from Google's Pixel devices to Samsung's OneUI and Xiaomi's MIUI and everything else. This also means that individual developers can create their own custom versions of Android, also known as custom ROMs. Developers can create these custom ROMs and add new features and functionality that aren't available in stock/vanilla Android
A custom ROM is essentially a firmware based on the Android source code provided by Google. A lot of people prefer custom ROMs because of the functionality they offer, and the ability to customise many things on the phone.
Another big reason why many Android enthusiasts flock to custom ROMs is that their devices stop getting new software updates after a couple of years and having a custom ROM offers them the ability to improve functionality and get their hands on the new software.
Advantages of Stock ROM
Security – Security is the key reason why people prefer STOCK ROM over Custom ROM. Each stock ROM is developed by reputed companies so there is no chance for any kind of malware to attack
our device because some devices come with Locked Bootloader. Due to which you have to unlock the Bootloader in order to install Custom ROM. That is why your mobile is much safer due to security.
Warranty
As long as you are in the STOCK ROM, your mobile will have a warranty. That’s why most of the users shift to the STOCK ROM after the warranty void. And stick with STOCK ROM for that purpose. This is one of the
reasons why users don’t use custom ROM over Stock ROM.
However, even after unlocking the mobile bootloader, many manufacturing companies offer warranties, although.
Disadvantages of Stock ROM
Performance
Manufacturers limit the device, as the device may overheat when it reaches its limit. Due to which you have to face problems from sometime during heavy task. Like multiple task or playing games, etc.
Less Space Many unwanted apps come pre-installed in stock ROM. Which we cannot easily remove or uninstall, because these are system apps Which very quickly fills our mobile storage. It
is the most unliked part of Stock ROM.
Updates Most irritating part of Stock ROM is that you need to wait a long for your manufacturer to send
the update to get new and exciting features in your device. Also after sometime manufacturer, stops
sending the update. In that case, you are stuck on the same android version with old features.
