Tips Before Buy Gadget

Do you have a problem with your new gadget and feel the performance is reduced after only a few days. Usually it happens because of several things:
Repackage the goods:
Not all the goods you buy in large took always have good quality. Usualy Because they want to hit big with the purchase of used / second ago is packed with new packaging.
To Overcome
Check IMEI number: check if the IMEI number is the same as the IMEI number if the same packet or not.
Check the hologram logo; see that there is a hologram logo on the battery and also on whether the goods brands that simply look like a paint stick or body of the original goods.
Accesories; Check whether the accessories and complete all work can also see the brand of accessories, if there is little damage immediately ask.
Price; Do you buy goods that are too low from the side, can be ascertained goods are goods with quality assurance, not because they may take a little lucky because all the electronic goods certainly have a good sale value.
Ok so from the tips when I have nothing question or less please give comment
thank