Final answer:
The statement is true; laptops and mobile devices require proprietary motherboards designed for the specific make and model, necessitating exact replacements during repairs.
Step-by-step explanation:
The statement is true. Motherboards in laptops and mobile devices are usually proprietary in their design, which means they are made specifically for the model and make of the device they are installed in. Consequently, when a motherboard needs to be replaced, a motherboard that is designed for that particular device is often necessary. For instance, an Acer laptop will typically require a replacement motherboard that is designed for that specific Acer model. Similarly, an iPhone will need a motherboard that is not only designed for iPhones but also for that specific iPhone generation or model.