There is an easy way to check the originality of your mobile phone.
Type *#06# and press Dial button [the green one]
After doing this, you will see a 15 digit IMEI code, like 154796009526653.
Then you have to check only the seventh and eighth digit of the 15 digit IMEI code. Only by checking the 7th and 8th digit you can verify whether your mobile phone is original or not ?
Very easy. Right ?