It's not that simple.
Generally, patent troll refers to companies that don't produce anything but instead use their patent IP for the purpose of suing or otherwise aggressively extracting money from companies that do.
This is a general misconception, and one that I keep reading about here, because one can be an inventor, with a very valuable patent portfolio, and not manufacture anything yourself. Yet you still have the right to sue anyone who thinks to come by free and rip your work. I don't see any wrong doing in it.
Note: I have a patent portfolio and don't plan to manufacture anything myself. I'll let companies like Apple use them, for a fee. So tell me. Does that qualify me as a patent troll, just because I choose not to produce anything myself? I don't think so.
Apple, on the other hand, primarily uses their IP to protect the stuff they produce from patent trolls.
No sir. Apple patents are here to protect Apple's inventions, and to make sure that Apple is the only manufacturer – and rightfully so – or you'll first have to obtain a license from Apple. This way Apple can control important things, stuff that matter to them, like quality control.
Also. Apple's patent portfolio is pretty large. Filled with stuff that it isn't using... and mark my words because the first company burning its fingers, will get hit by a patent lawsuit. And why would they?
Muddying the waters is that there are a surprising number of patents that seem absurdly overbroad or obvious, which should have precluded the patent from being granted in the first place. A lot of people (I do) feel that how valid a patent is affects how "trollish" a company is being when they defend it.
But what I read here, most of the time, is the tendency by people to protect Apple. Even when it is very obvious, at least to me, that what Apple did was wrong.
OK, if it's clear to you then you must have read & analyzed the relevant patents and Apple's use of relevant technology. Maybe you did, which is great, but otherwise you're not in any position to see it clearly one way or the other.
And thus so be it.