If you want it chucked back at you and an iPhone employee to scream, “Here is your phone, asshole!”, go ahead. I swear, more businesses should be run like bars.
A friend bought me a fake smartwatch from Aliexpress and it didn't work. Turned out that it had a plastic protector that didn't let electricity pass through the battery to the watch
Important note : some fake iPhone are secretly Android, since if you shut down your Android phone then it won't accept power , you have to hold piwer button to start it