Worlds largest maintenance database website. We made a maintenance software for Laptop and smartphone in English version,It including circuit diagram、schematic、Boardview and Maintenance Cases for the following products.Smartphones include all iPhone, Huawei、Vivo、Oppo、XiaoMi、Samsung.... ,laptop includes APPLE、Lenovo、Dell、Hp,Samsung.... VIP（all functions）only need less than 0.1 dollar per day。