Need help to delete photos

Last week, after i went home from my trip ,I copied all the photos to my computer's backup file.

Then I removed them from my iPhone because they took up my 6.3 GB of mobile memory (including photos and video) , But last night, I stumbled across my phone's Settings and still displayed: photos -- 6 GB, but those photos or videos has been deleted from my iPhone, I'm sure that I did it myself,

I don't understand what the reason is?

Maybe it is displaying photos from icloud or something.

Or recovery, or you accidentally did not delete it at all.

Lot of possibilities.

If you copied the photos and then you manually deleted them from your phone it's possible they're still in the "deleted photos" folder where they'll stay for about a month or when you manually empty the folder. It's a security measure to prevent you from deleting the wrong photo.

In general , after i deleted these photos or videos form my iPhone , my iPhone should made some space , but it didn't ,

What you mean that these deleted photos may still be in my iPhone .........Will it be really deleted after a month ? OMG , it's too complicated , I always thought they had been deleted.

You don't have to wait a month. Like korvus wrote, you can manually empty the folder. Just go to "Albums", which you can select from the bottom right, then find "Recently Deleted". You can delete all of them from there.

Ok, so if you go to albums you will have several folders. Camera Roll, Favourites, Videos, Selfies, etc. One of those folders is called Recently Deleted and will hold everything you delete for 24 (I think) days which means the photos and videos aren't deleted at all yet; they just got sent to that folder. If you go to the Recently Deleted folder and press Select > Delete All then they will finally be out of your phone. You can also use that folder in the future if you delete something by accident and you the Recover option instead.

Thanks , i will test it for my iPhone , and i want to know , these data can be recovered back if i do that ?

That mean i can permanently delete them from my iPhone

Yes :)

Unfortunately , these delete data can be found with recovery tool . i have tried it ,

On iOS 10 or later, the deleted photos will go to 'recently deleted folder' first for 30 days. that is the reason why the storage is not cleared up. Actually, you will find pretty easy solution via Google search result like this one. Usually, you should pay extract bucks.

So , after 30 days , it will be completely wipe out , it will take a long time