Review: The iPhone 7 is just fine, even if it doesn't wow

TIBURON, Calif. -- Apple's new iPhone 7 and 7 Plus are clearly improvements on their predecessors - even if the biggest change is actually an omission (of the traditional headphone jack). But are they improved enough to justify an upgrade?If you're an iPhone user, it may depend on how long you've held onto your current iPhone. If you're a proud owner of the iPhone 6S or its plus-sized cousin, you probably don't need to rush out for the 7. But the 7 includes enough cumulative iPhone improvements