The dual-SIM Huawei P30 and Huawei P30 Pro have a memory card slot, but it isn’t compatible with run-of-the-mill microSD cards we’ve all become accustomed to. Instead, it works with something called Nano Memory (NM).
These NM cards look similar to a standard microSD, with the main difference being they’re smaller. In fact, they’re the exact same size as a standard Nano-SIM, which is used to establish a cellular connection.
However, users will need to choose between whether they want to increase their handset’s storage by up to 256GB or add a second cellular line to their device since the memory card occupies the second SIM slot.
The single-SIM model does not have a memory card slot.