backup 相一般極煩, 唔係點氹到你買 cloud
若果你冇開到 iCloud Photos, 可以直接用USB吉iPhone落電腦
File explorer 入邊嘅 iPhone device 會直接有 DCIM folder 俾你全數 copy 落電腦 HDD 做 backup
但係開咗 iCloud Photos 嘅話 DCIM 入邊啲相係唔齊㗎, 要去
https://privacy.apple.com → obtain copy of data → tick iCloud Photos 先至齊