Most of Huawei phones including latest P10, Mate 9, Nova, support SD card expandable memory storage, which utilizes a file system that makes it possible to recover deleted photos off the memory. If you have a SD card installed on your device, it should be the default place for storing media files, the place where your precious photos were deleted from.
Here's a step by step tutorial you can follow: huawei phone photo recovery
Steps to recover deleted photos from a Huawei phone SD card
1. Take out the micro SD card from your phone and insert it into the computer, you will need a micro SD card adapter or USB card reader to connect the card with computer.
2. Download photo recovery software, the application is a computer based software, so if you're reading this on your Huawei, you need to find a computer to proceed. It can be Windows 10, 8, 7, Vista, XP.
3. Install and start photo recovery, if the memory card is properly mounted, the software will detect the card and ask the permission to run a scan, make sure it's the card, not your hard drive we're probing into, click scan.
4. The scanning will probably take time if the card has been heavily utilized, while scanning, the program index and categorize the recoverable files by types and file extensions, photos and videos can be previewed in the built in media player. Some of the images may appear grey or partially damaged, they're corrupt files that subject to overwritten.
Recover all the files. You don't have to sort out the files within the photo recovery program.