[mothereDD]

But surely they will have another of said cheap phone to hand to weigh.. I mean they will surely weigh those in an investigation.. or do you think they will only weigh the one you sent back.. also what's to say they dont go through the contents and check.. and if they see the extra item in there they will probs call the police with good evidence against me lol

I don't think you've grasped the concept of the sealed box method.

The objective, Is to replace the original Item with anything of the same weight and seal It perfectly as per the manufacturer's packing without any signs of Inconsistencies whatsoever. As such, when you return It, they'll assume It hasn't been opened, then scan It and place It back In their Inventory.

A refund/replacement will be Issued thereafter.

Ok but have you personally been able to take the security seal sticker off and put it back again? because there is no other way to get in through the back or bottom of the box, its an expensive phone and has a good box. The cheaper one i can see there are sides where you could in theory take out. on the expensive one its completely dependant on that seal. As the top box then slides up like say an iphone box. Have you had success getting security sticker off if so can you elaborate what you used? Perhaps some kind of solvent to take the sticker off and then apply some kind of thin glue to get it back?