I did that once, with the MPx200, and although I got it for only 180 Euros, I haven't been entirely pleased with the PDA part. Some drawbacks:
* it takes around a minute to turn on. This isn't a big problem, but in some occasions, eg. when the battery is low, a quicker boot would still allow me to send that crucial SMS. Now it just boots and half way through it switches off.
* menus were slow
* the overall latency is very high compared to standard phones, which is annoying in some cases
* sometimes Windows would just crash. Or at least stop to react. All I could do in such an event was to remove the battery and restart the phone.
* sometimes the phone wouldn't start either: it would just hang at the "Hello Moto" screen. Removing the battery AND SD-card and restarting it after replacing just the battery would sort this out. Once it had booted correctly, I could turn it off and put the SD-card back and then start it fine.
- limited use:
* I bought it because of the affordable price. I wasn't planning on watching films or anything on it, I just liked the idea of being able to read ebooks and stuff like that on the way. The screen isn't perfect for that, but as long as I stuck to .html or .txt files opened in Internet Explorer, it worked really well. Internet Explorer was surprisingly fast. However, .pdf or .doc or other files were a nightmare: first of all they need 3rd party viewers that aren't freeware. Once installed, those programs either produced unreadable results (one PDF-viewer didn't have the resizing option so I had to scroll like a madman constantly) or took about a month to load a document
* when I got the phone, I immediately started looking for programs to install. Some of them were useful and nice (eg. Quickclose) but most of the programs available for SmartPhone just seemed crappy to me: if they worked on my phone, they usually didn't really do what they we're supposed to do, or only did it half assed BUT did have a bunch of other equally useless features I wasn't looking for. On top of that, only a handful of programs were freeware.
Those are my experiences with the Motorola MPx200 in combination with SmartPhone 2002 and 2003 (the latter being the better OS).
What I'm looking for in my next cell phone is:
- better reaction time
- lower boot time
- the ability to comfortably read documents on it. I don't mind the small screen (Internet Explorer was pretty nice to use), but I would like to be able to read all major document types without having to scroll all the time
- MP3 or WMA or OGG or whatever ringtones: can't help it, they're the nicest ringtones.
- the availability of freeware programs that do what they claim: I like the "KISS" approach (keep it small, simple), so I don't like software suites with a gazillion features. I want a small program that does one thing and does it well. If that's not possible, I'd consider a phone with a well documented SDK so I can (try to) develop my own tools.
I don't know if my wishes are realistic. But that's why I started this topic: I'd like to know if I can find such a phone or if I should just stick with a simple phone and get a seperate PDA or possibly laptop to the other stuff.
Also, I'd like to hear experiences with other cell phone OS'es like Symbian and GNU/Linux as I haven't worked with those yet.