The mobile phone has slimming function, that is, it can compress large photos in proportion, thus achieving the purpose of saving space.
Open the phone photo album, click the three points in the upper right corner, and then click Free Space.
Step 2: After scanning, click to lose weight immediately.
Step 3: Select the photos to slim down and click Start.
Finally, it was successfully done!
This is my way. Here's the thing. Mine is Xiaomi mobile phone. I wonder if other mobile phones have this function. I guess there is, because the space of the album is limited.
Finally, I want to emphasize, what does prudence mean? As we all know, compression is based on sacrificing image quality. If you have very important photos, compression is not recommended. Only compress those that are dispensable and irrelevant.