Generally, if it is a real after-sales service, not an authorized private e-commerce; They are all new boards, because they are only limited to replacing boards after sale, rather than specifically doing chip-level maintenance. Changing the board can ensure that there is no problem, and changing the chip is afraid of repeated problems. However, there are also, after the bad board is returned to the factory, it is repaired at the secondary chip level; Then label it. As a new board to the next customer. High after-sales fees, a lot of tricks. It's not transparent. Originally, the problem is very small, they also said big, anyway, it is always the consumer who gets the knife. Therefore, dealing with businesses, or multiple eyes.
It is not possible to distinguish, it is recommended to replace after sale, under normal circumstances, after sale replacement is the original motherboard, for the mobile phone motherboard, can only replace the same type of motherboard, even if it is not the original motherboard does not affect the use, may be slightly worse in quality. ; This section describes Huawei P7 configuration parameters:;
Main screen size: 5 inches; Main screen resolution: 1920x1080 pixels; Rear camera: 13MP; Front camera: 8 megapixels; Battery capacity: 2500mAh; Battery type: non-removable battery; CPU: quad-core; Memory: 2GB.