If there is a problem with the wifi built-in chip, and the period is within the warranty period, the replacement can be replaced free of charge in accordance with the warranty contract. However, if the warranty period is exceeded, the replacement of the chip needs to be charged in exchange, and the price is subject to the price of the local manufacturer
1. If it is a mobile phone, these accessories have been included at the time of purchase and have been charged
2. If it is a computer, it has already been charged