> Bikes don't mandate fancy tools for regular maintenance.
Phone batteries need replacing every few years. The kind of maintenance that a bike used daily will need on that schedule is absolutely stuff that requires fancy tools.
Current iPhone batteries are rated 1000 cycles. That's many years if you mostly leave your phone in standby, that will be less than a year before it significantly degrades if you're using it daily and not just for web/SNS browsing.
That's my home's experience, if you listen to The Vergecast that's the hosts' experiences as well.
Phone batteries need replacing every few years. The kind of maintenance that a bike used daily will need on that schedule is absolutely stuff that requires fancy tools.