Hi @Roxzfr, thanks for your post and good question.
This is a know issue with iPhone and iPad images, I would be interested to know how they are capturing the original images.
If the image was taken with an iPhone device, you can explain this to your customer, that unfortunately, the iPhone camera hardware does not save the image directly in rotated form.
So rather than rotating the entire image, the camera software just adds a data file to the image noting which orientation the image should be in. It adds this information to the Exif data to these kinds of affected image captures.
So, when you open that photo with an application that reads the Exif data, the image is rotated while it’s not in other applications that don’t read the data. So basically, this image is saved in its original, unrotated form, but the Exif data is making it show in the rotated actual position.
To fix available images, the client should first open the image with an image editor tool such as Photoshop and save it again in the right orientation.
For new images, you could ask them to try and use a different camera or take photos in a different orientation on their phone. I found this guide online, but I’m not sure how helpful it might be: https://theunlockr.com/2012/04/23/how-to-stop-auto-rotate-for-images-on-an-iphone/
Let me know if this helps