Re: @JetSetJim - How many patents???
Not all of those patents will impact the phone, for a start, but your point will still stand as the bulk of them will be in that arena. It mostly makes it difficult for new entrants to get into the market as the patent piles are, in general, traded between the players (e.g. Samsung says to Nokia "you can use these 500 patents if I can use those 500", but probably a bit more detailed than that) so the existing players probably end up paying less than 600% of the phone cost (assuming 0.1% of final phone "value" is a fair licensing term - I don't know the limits of FRAND). This basically means that the existing players are encouraged to come up with as big a pile of patents as possible to be used in this trading process (so there's some innovation there) while they are working towards writing the new standards.
Overall, I am not sure what the cost might be as a "tech start up", with nothing but a pile of cash and a desire to make a decent phone, to license the entire essential patent pool just so the phone will work with the various disparate networks (GSM, UMTS, HSPA, LTE) out there. Certainly the cost of some of the chipsets that are out there include that licensing cost, which probably accounts for a lot of the patents (but that's just my unproven assertion based on working in the industry without ever seeing pricing of such things). My rough understanding of one of the Apple-Google/Motorola disputes is that Googorola licensed the FRAND stuff to the chipset manufacturer who then sold on to Apple. Apple claimed that gave them a license, Moto disagreed (I've got no idea who is correct in this disagreement, or even if I've got the right end of the stick in describing it).
Or, sticking a mock-Fandroid hat on, you can just implement the standards in a new phone (they're well documented, after all) and not bother to enter negotiations for FRAND licensing - just sell the phone while patenting the non-essential, non-FRAND-liable things that make your new shiny special despite them being either obvious or otherwise trivial (or even already implemented in others devices) - and then abuse the legal system to throw your weight around and get market share while not really contributing to innovation in the standards. </iExtremism>