The near future,IPhoneUsers can enjoy unlimited original image quality upload to Google photos. One of the reasons speculated by some media and users may be that HEIC rather than JPG format is used in iPhone, which can greatly reduce the size of image file format.
A reddit community user published his brief analysis
In recent years, the iPhone has been storing images in HEIC format. The advantage of this format is that it can be smaller than the JPG file compressed by Google. Therefore, the iPhone can get unlimited original image quality upload and backup for free.
If Google recompressions these HEIC files, the image file size may further expand, and it will waste computing performance, so Google will directly upload these HEIC files to its ownThe serverUp.
Later, Android police, a foreign media, contacted Google about this matter and got a reply that "we acknowledge that there is a bug and will fix it as soon as possible." However, Google did not provide a specific time for the release of the patch.