So there's a complete lack of clarity on this topic, but im hoping someone's figured it out in practice. Say i have a 16gb device, and 10gb of photos in iCloud Photo Library. I set my new device up and turn on "optimise iPhone storage" in settings. Question 1: How much storage will that 10gb actually translate to with the optimise option turned on? (Or does it keep as much as it can locally but delete files as necessary to save space) Question 2: What happens if the device is full even with "optimise iPhone storage" and I try to take a photo or a hefty video? Does it automatically adjust and allow me to take the photo, or am I dead in the water until I delete something myself? Any insight is appreciated.