Look guys, the capability is there absolutely. Other phones have been doing it for years. The chips are there, the space is there, etc.
Apple decided we can't have simultaneous voice and data.
Want to know why? Because Apple is obsessed with making the phones smaller each time instead of improving their capabilities. You may notice that the battery is for all intents and purposes not increased since introduction of iPhone 4.
1,420 mAh - iPhone 4
1,430 mAh - iPhone 4S
1,440 mAh - iPhone 5
Wow! What a whopping increase in battery capacity each time! Under 1%!
That, my friends, is why we can't have talk + surf. It would use up too much battery, and since the current iPhone is "too thick" and we want to make it smaller, we can't have a larger battery by adding, say, 30% battery capacity by using the newly freed up space to increase the size of the battery.
Apple loves to do their little battery presentation in the keynote. It's a bunch of crap. It's not even that great of a battery **and** they are not allowing us features precisely because of their battery claims/concerns.
This is ridiculous. The iPhone used to be a cutting edge product. Now it's a "we will give you whatever we feel like giving you because we can" product. The 4S and now the 5 are products that are way behind and *not* more advanced than the competitor phones.