I used an iPad Pro backup to perform the initial install on an iPhone, with the intent of keeping both devices. However, when I use Face ID in an app on one device, it makes me reset it on the other. It's getting to the point where I'll only use an app on one or the other, but that's not the ideal solution.
Is there some trick to now have both work at the same time?
At the time of install, the iPad Pro M2 was iPadOS 26.7 and the iPhone 17 was new out-of-box. They've both been updated to iPadOS/iOS 27.0.1 and it's still acting this way. Both use the same iCloud account for cloud backups/storage.