Hello,
Please refer to the following support article for the list of features available with the Phone Link app on Android and iPhone.
Even on Android, only supported devices can use the full set of Phone Link features.
Seamlessly transfer content between your devices
The features available on the iPhone version are currently more limited compared to the Android version.
When you mention that “there is an issue when sending files or photos between devices,” do you mean that an error appears when attempting to transfer a file from your iPhone using the Share feature?
At this time, I was not able to find an official support article for this feature, although I do remember seeing one in the past. Based on this behavior, it is highly likely that the feature is currently experimental. I have previously seen a report where this function used to work on an iPhone but later stopped working, and the support documentation confirmed that it was not an officially supported feature.
For this reason, the feature may work in some environments and fail in others, and it should be considered unsupported at this stage.