unfortunately, this step is necessary. More and more often we buy non-original spare parts (mainly due to the price but also due to the lack of availability of genuine spare parts). These, especially Chinese ones, are often incomplete or not working.

Connect the whole new set to the tablet and test their operation. If you do not peel off the protective films, you can easily return the purchased non-working items and request a replacement or refund. If the technical film is removed earlier, dishonest sellers try to blame us - the owners of the devices for installation faults