Most of the things you are describing are not innovation, they are incremental improvements or market penetration. There is a ton of work that can be done on phones. And to be fair most of it isn't a question of if it can be done, it is if it can be done easy enough and user-friendly enough and cheap enough. Apple has a ton of power in that field. They are one of only 2 companies that can snap their fingers and make something universal in the phone world and bring mass production to high enough levels to bring prices down. Look at things like digital payments and fingerprint reader, those were on android phones long before Apple and they were on computers long before that, the innovation was already done, but only Apple could make the decision to use it and therefore make it universal, and that is when people think the innovation happened because that's when the average soccer mom can actually take advantage of the technology and therefore justify investing in it, usually in the form of a new phone. There is plenty more to do in this area, phones can completely replace laptops and many desktops, they can keep taking better pictures, especailly in low light or other non ideal scenarios, more phones can start to support a stylus, assistants can get way way better, the phone can better interface with smart homes, battery life, charging rate, lots of things need improvement.