Krussell International AB of Sweden is in an interesting place: selling high-end leather cases for various mobile devices in over 50 countries, they can aggregate their sales reports and figure out, based on their best-selling cases, what the top-selling mobile devices are worldwide.

And based on their findings, the Top 10 PDAs and smartphones for the month of August 2005 are the following:

1. PalmOne Treo 600/650
2. HP iPAQ HX2100/2400/2700
3. Qtek S110/I-mate JAM
4. HP iPAQ HW6500
5. HP iPAQ hx4700
6. Qtek 9090/02 XDA III
7. Yakumo deltaX GPS
8. Mitac Mio 168/Yakumo 300 GPS/Navman PiN
9. PalmOne Lifedrive
10. HP iPAQ RX3100/3400/3700

And here are the Top 10 mobile phones in the world market for August of 2005:

1. Sony Ericsson K750i/K750c/W800
2. Nokia 6230/6230i
3. Motorola Razr V3
4. Nokia 6680/6681/6682
5. PalmOne Treo 600/650
6. Sony Ericsson V600i/K600i/K608i
7. Qtek S100/I-mate JAM
8. Sony Ericsson K700i
9. Nokia 6020/6021
10. Nokia 5140

Caveat: Of course we cannot categorically say that these are, hands down, the best-selling devices out there. What we can safely say is that these are the most popular devices among the people who care enough to pamper their devices with high-end leather cases. Which means that if some ultra-cheap phone turns out to be the top selling device in the universe, we wouldn’t know about it using the above methodology. Nevertheless, this could still be a good indicator of the higher-end market’s buying behavior.

And yes, I do have a Krussell leather case for my trusty PDA. But no, I don’t think of myself as being in the high-end. Heck, I’ve been known to scour surplus shop detritus like a madman.