The P30 Pro just dropped, and the flagship keeps a fair amount of the Mate 20 Pro's DNA while merging it with a bit of last year's P20 Pro, with an end result that both maintains and evolves Huawei's flagship … It is a quick-access, temporary virtual storage that can be read and changed in any order, thus enabling fast data processing.The device has a standard memory slot (such as an SD or micro SD card slot) that enables you to extend the built-in internal storage with affordable memory modules, or easily retrieve data, such as photographs, from the memory card.The internal storage, also called read-only memory (ROM), refers to the built-in storage space available in a device for system data, apps, and user-generated data. Please close this window and try again. A higher megapixel count means that the camera is capable of capturing more details. More battery power can be an indication of longer battery life.The battery is removable and can be replaced by the user if broken.The manufacturer offers a branded wireless charging kit. Only the P30 Pro and Mate 20 Pro have room for expansion, but it’s via Huawei’s proprietary Nano Memory Card. That said, the Mate 20 Pro plays catch-up when the price tag comes into discussion.