The percentages on a phone bill can be very deceptive about how people actually use their phones:
-Third party offline software, music and video sales (purchase onto PC, transfer to phone) are completely ignored by phone bills
-Offline usage (including games, photos, videos, music playback, video playback, FM radio and GPS using offline maps) is completely ignored by phone bills
-People frequently pay for calls and texts up front in packages, rather than paying as they use a particular service. If the package includes unlimited data too, then no matter how people actually use their phones, the percentage breakdown on the bill will remain unchanged. Any radical changes in usage would go completely unnoticed as far as billing is concerned.
...but in total, yes, the vast majority of people use their phones for calls, texts and little else. You only have to look at the average sale price of a handset to know that, which is something like 90 euros.
You cannot buy a smartphone or 3G or bluetooth or camera phone for that amount, so most people simply don't have the hardware required to use any advanced services even if they want to.
It will only get genuinely interesting when smartphones with 3G, bluetooth, decent cameras etc do go below the 100 euro barrier, then you'll have the real mass market colliding with advanced hardware. That's what I've been saying all along:
http://www.allaboutsymbian.com/features/item/The_Last_Smartphone.php
It's hard to know when it would happen, but if you look at phones from 10 years ago the most expensive models had the same features as the cheapest phones today. If that rate of progress keeps up, then we can expect to see the first sub-50 euro smartphones in about 2017 and the first sub-100 smartphones some time before then, maybe in 2012.
Smartphones won't be called that by then of course, they'll just be everyday phones, and the technology fans will have moved on to some other new and expensive feature which no one uses. People used to enthuse over GSM and SMS, no one does that any more because they've succeeded in becoming mass market.
Like fashion, food and music critics, technology fans only seem to enjoy features or devices that are used by a tiny percentage of people.
Even the supposedly wildly popular iPod has only managed to sell 100 million over the past five years, which is a pathetic 1.6 percent of the Earth's population. By contrast, mobile phones (most of them bog standard ones) sell 1000 million units every year, so if these sales keep up there'll soon be a phone for virtually every person on the planet. It's the bog standard technologies that make the real difference.