Are you sure you want an iPhone? I switched to an iPhone 15 Pro after years on Android, and while the camera is better, everything else feels less convenient. Transferring took me 8 hours for 100 GB, and I miss the editing features from my Samsung. Just something to consider.
@Winter
What was so nice about editing on Samsung? I’ve just got my 15 Pro, and I’m curious about how their editing compares to what you had on Samsung.
Try deleting some files off WhatsApp and making a new backup. It worked for me when I had a similar issue.