iPhone won't use HEIC file format, only JPG
I just observed that my iPhone 7 Plus uses HEIC file format for all of my photos, but on my iPhone 8 Plus, it only uses JPG file format. I had already set the camera setting to “High Efficiency” (see photo below)
My front camera was replaced already, since the original one was broken. Is this normal on the iPhone 8 Plus or is it because the front camera has already been replaced?
Background: Just bought an iPhone online, the seller said True Tone was not working, and I am planning to fix the phone, but apparently the iPhone have some “hidden” issues. The earpiece speaker is not working, because a flex cable is damaged.
Update: Tried to put the original front camera back and still got the same issue. How can I trigger the HEIC file format on the iPhone 8 Plus?