I don't understand this. It's either an example of extreme penny-pinching, some sort of odd engineering compromise, or a massive oversight on Huawei's part. Whatever the reason, the reality is that those cameras with all their megapixels of resolution are going to burn through the 128GB of built-in storage in no time.
No matter how you try to spin it, this is a big design flaw.
If you're going to use the P20 Pro for any serious amount of photography, you're going to need to have a in place an effective way of offloading the photos off the device and either onto physical storage or into the cloud (or both). If you don't get into the habit of doing this early, you're going to be fighting an uphill data battle.
A battle that you'll soon lose.
I'm not saying that the lack of a microSD card slot for expansion is a total deal-breaker. I mean, the iPhone doesn't have microSD card slot, and that's not a deal-breaker for a lot of people, but what I do find odd is that this feature is absent on Huawei's flagship "Pro" handset.
It's such a simple feature. And I really don't know why Huawei left it out.
What the next iPhone needs to keep up with premium Android smartphones