Is a micro sd or a hard drive installed in a huawei p smart 2019?

Is a micro sd or a hard drive installed in a huawei p smart 2019?

Neither is built into a smartphone, you can insert an SD card into the cell phone.

How then does the cell phone have a memory?

This is a soldered chip on the mainboard

OK thanks

There's a memory chip in an SD card. Such chips are also available for PCB assembly to be soldered in and something like that sits in the cell phone as internal memory.