The German Federal Network Agency warned that cheap electronic devices sold over the Internet may be dangerous to the user, as well as interfering with other electronic devices.
German experts have suggested that using an improper charger with a smart phone could cause a fire at home or lead to an electric lock, and a computer without protection against excessive heat could heat up, cause a fire or explode in the worst case.
German experts recommend that the operation be limited to devices with the CE mark.
The user has to compare prices between competitors, and the difference between them is reasonable, so as not to buy electronic devices dangerous to him, and in case of doubt must ask the seller about the product, usually well-reputable shops respond to the customer quickly.