The Samsung Galaxy A3 is the baby of the A series in the new Sammy range, and it’s the prime candidate to root with the CF-Auto-Root tool so you can unchain the operating system and have some fun at little expense. Anyone who does decide to root the Samsung Galaxy A3 smartphone will be subject to many new apps available to install from the Google Play Store and other third-party sources like the official websites of the developers who make the apps. J. Rummy is a name you might already know as a guy who has his own website pointing to the ROM Toolbox application. The ROM Toolbox is a great example of an app you can install on the Galaxy A3 after you complete the guide. It offers you an all-in-one solution for most things you will care about, like

The rooting file for the Galaxy A3 smartphone found in this guide is based on LRX22G.A300FXXU1BOK4 firmware which is part of an Android 5.0.2 Lollipop update for some regions around the world. The region that firmware rolled out to might not be in your language and it doesn’t really matter because you do not need to be running that firmware on your device. The developer of the rooting method gives us that information for us to use as an indicator.

Samsung Galaxy A3

What Is Rooting the Android Operating System?

When you buy a new smartphone, you might not know it, but the Android operating system is in a “locked” state. For the most part, it will not make much difference to you: most apps are still available to use, and there are benefits to this locked state such as better security. When you root the Android operating system, you are gaining full administrative rights over the OS.

Why Would You Want to Root Android?

Gaining full administrative rights over the operating system has some perks to some people. For example, out of the millions of applications available on Google Play, some of them will not be able to run on your device unless it has root access. Until you have a specific need for wanting Android rooted, you probably want to leave Android as it comes out of the box. But if you need to unlock an app, then that is when you want to look into rooting methods. Using more apps is only one example of why you may want root access, here is the full list of benefits:

  • Unlock more applications. Some of the apps available for Android cannot run unless you have root access. This is because the app’s features cannot run without the root permissions because the features require the full system access before they can be useful.
  • Better battery life. Smartphones are great, but they have one caveat, which is each time you recharge the battery, it loses some of its overall lifespan. That means smartphones, in general, do not make great investments, and if your weekly paycheck is low, you will want to limit the number of smartphones you go through. One of the ways you can do that is by removing bloatware and creating a better battery life.
  • Bolster performance. If you are the budget-conscious shopper, you may want to increase the device’s performance. This can be done by removing the bloatware as well. The more processes you have running, the more memory that is used. By removing some of the apps, it can help lighten the load on your hardware.
  • Customize Android with themes. With root access, you can download and install any theme that’s at your disposal. That includes any customized theme you can find.

What Are the Risks of Rooting?

If you are buying a smartphone that is not running iOS, then it is probably the Android operating system that you want running as the ideal software to pair with your shiny new hardware. It is, in fact, the Android OS that offers you the chance to customize the OS considerably more than iOS: custom themes, run any app you know about, the works. For many users, the “openness” of an operating system is important, because it offers them more freedom which means running into fewer problems with their investments. But there is a reason iOS likes a far more locked approach: the ability to customize is not for everyone, and if you do not know what you are doing it can lead to a lot of problems which can define your time with the OS rather than freedom.

With power (full admin permissions) comes greater responsibility. Here are some of the main risk factors when it comes to rooting:

  • Malware becomes a larger threat. You might read the occasional news article about how new malware is wreaking havoc in parts of the world on Android. But the Android operating system with root access becomes considerably more vulnerable to exploits because applications are no longer prisoned off in their own sandbox environments. This means if you accidentally download malware, it can do more damage because it can spread throughout the operating system and even jump into other applications and potentially view sensitive data.
  • You can accidentally brick the smartphone. There is always a chance that you end up bricking the smartphone before you had the opportunity to use it with root access. That is because if you are going to brick it, it is going to happen during the rooting process.
  • You may void the warranty. Most manufacturers do not allow you to root the Android operating system and still get to bring it in for repairs under warranty. Whether they are legally meant to do that or not is another question, but it is now common knowledge that most do not want to help you if they find out you have unlocked the OS with root access.

Files You Need

  1. Download the CF-Auto-Root file for the Galaxy A3 smartphone on Android 5.0.2 from here.
  2. The Odin flashing tool is available after you extract the rooting package from the link above. You can find out how to extract the package to find your flashing application during the guide. You shouldn’t need anything else to complete the steps apart from the rooting file and the flashing tool.

Rooting the Samsung Galaxy A3 SM-A300F running Android 5.0.2

  1. Enable the USB Debugging Mode on the Samsung Galaxy A3 smartphone before you connect it to the computer with the USB cable.
  2. Extract the rooting file to the computer when you have the file on the desktop.
    Right-click on the Odin application that is on the desktop and choose to run the application with the administrator permissions from the menu.
  3. Long-press the Power button on the Samsung Galaxy A3 smartphone and tap on the option to switch it off on the display.
  4. Reboot the Samsung Galaxy A3 smartphone using the button combination for download mode and then connect it to the computer with the USB cable.
  5. Look at the Odin application user interface on the computer and check that you can see a yellow or blue ID: COM port. No port light means that your Galaxy A3 device has not been detected by the Odin flashing application and you will need to install the universal Windows ADB driver and try again.
  6. Click the AP button and browse the desktop location for the rooting file.
  7. Click the Start button.
  8. Wait until you can see the Galaxy A3 display says it is about to install the SuperSU application, clean up the cache partition and then re-flash the stock recovery on your device.
  9. Look up the Odin application on the computer and wait until it gives you a green box with a pass message inside before disconnecting your device from the computer.

In conclusion, that’s everything you need to root the Samsung Galaxy A3 smartphone with the SM-A300f model number running on the Android 5.0.2 Lollipop software update.

Any Galaxy A3 smartphone that does not boot into recovery mode after the flashing will need to be manually booted into recovery mode. You can do that by pressing the hardware button combination on your Samsung Galaxy A3 smartphone. Once you have a rooted device, try heading over to the Google Play Store and installing the Quick Boot application instead.

Furthermore, there are plenty of other Odin versions if you want to give one a try. Sometimes a particular version doesn’t flash for certain devices and it’s impossible to produce when that’s going ot occur.