> Apple's biggest challenge seems to be convincing their current customers they need a new phone at all. That's not much of a challenge for Apple. There is al

> Apple's biggest challenge seems to be convincing their current customers they need a new phone at all. That's not much of a challenge for Apple. There is always a laundry list of features that people want but that aren't necessarily mature (e.g. Wireless Charging, NFC, waterproofing) and Apple keeps those in it's back pocket incubating. Occasionally it pulls one out and slaps it on one of their devices to boost sales. They also drive sales by adding or removing features from their devices (e.g. Firewire 400/800, USB-C/MagSafe, Lightning) or dropping support for legacy systems. Mechanical failure is also a common reason to upgrade but Apple seems to be cannibalizing this revenue stream by replacing mechanical devices (e.g. switches, buttons, touchpads) with solid state ones that use haptic feedback. I'm curious how that will play out, will Apple's Taptic engine be the point of failure?