How to check your Samsung android phone before buying

                                        If you are going to buy a used Samsung android phone from any seller, you have to check it’s quality first, you see if you sell your Samsung or any company’s phone to a shop then those trained workers will check the quality of your android device, but if you will ask them what is the code to check it , then they will never tell you this ,they always say this is a secret we can’t tell you but the fact is if they will tell you then you will also check the phones that they will sell you later, that’s the secret why they are not telling you ,so don’t worry friends I am here to tell you  in detail – 

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