[mothered]

the weight of the phone is about 200 g but I have already thought about the rest, if they say it is broken I say that I did nothing and maybe it was damaged during transport

You're Intending to obtain a refund, so this will defeat the purpose of your objective.

200 grams Is a little too heavy to box the company, however given the size of the Item suits the method, you can add extra packing to make up the difference In weight. If you wish to box them, be sure to checkout their terms to see who's responsible for loss of goods during transit.