Error importing iPhone photos to PC

Hi All,

I am facing issue while importing iPhone photos to PC, I have tried three ways to import so far and none of there is able to import successfully.... As my storage is almost full my motive here is to copy all the photos to PC and delete them once copied so that i get free space in my device. trying to copy around 2.5k photos and videos.

Versions: Windows 10 latest public patch

iOS: 11.4.1

Device: iPhone X 64GB

Apple support suggested to keep the iPhone unlocked the whole time (will play a long video to not get locked automatically) and also iTunes app needs to be opened in PC (not sure why)

1. Photos app > import starts but fail's at some point saying "something went wrong"

2. iPhone drive which will appear in my PC - right click and choose option import pictures and videos - it asks to skip a picture for some error and ended up skipping half of the pictures and at the end when it starts to delete the photo, it deletes the photos its skipped too so lost few pictures.

3. iPhone drive which will appear in my PC - manually cut and paste in a folder and this stuck in the middle tooo

All three methods connected the phone to PC via original Apple lightening cable

All these methods there is not disturbance to the phone or PC, the connection is stable.

I even tried to import around 200 photos each at a time some batch will be moved successfully but some will fail again.Did anyone face similar issues before, if there any other way to import please help me out.

Thanks,

Baradan