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How to Check Samsung Galaxy (Android) Smartphone Before Purchasing One?

It always feels good to own a Smartphone that can offer you all the features you need. Android is certainly the most popular OS these days for the Smartphone users. Samsung is right now the leading brand of Android Smartphone. If you are looking to buy one, then it is important to test its hardware and software before purchasing one. This guide will show you how you can test a Samsung Galaxy (Android) device before purchasing it. You can use this method to test almost all the Samsung galaxy devices such as Galaxy S3, Galaxy S4, Galaxy S5, and more devices.

Step 1: Open the Secret Testing Menu

Open the dialer of your galaxy device and type *#0*#. Right after that, you will see a secret menu having different options like the one you can see in the image below:

This is the screen short of the device after dialing *#0#
This is the screen short of the device after dialing *#0#

Note: This tutorial is given using a Samsung Galaxy S4 i9505 device. You might see a few different options on your screen, based on your phone’s hardware and features.

Step 2: Test Your Device for Any Possible Faults

By taping on different options such as vibration, touch, sensor, speaker, mega cam, front cam, and more, you will be able to test your device for any possible faults. For example, if you want to test the touch of your device, then click on the “Touch” option. You will see a screen like:

This is the screenshot that will appear on the screen after taping on the "Touch" button
This is the screenshot that will appear on the screen after taping on the “Touch” button


Here, you will have to join the lines. Start from one point to another. If you are unable to join these lines with each other, then it means there is a problem with the touch of your Galaxy device. Once all the lines become green, then it means the touch is fine. Test all the functions available on this menu to see if there are any issues with the device.

This is a very necessary trick that every person should use before purchasing a second-hand Samsung Galaxy (Android) device. For more useful tips and tricks about Samsung devices, keep visiting us. I hope you will get benefit from this post because this is intended to help people get the best value for their money.

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