Does anyone know a good PDA with WLAN and GPS? I know there are a lot of smartphones available that have those features, but they are usually expensive and since I am happy with my current cellphone (that is only a few months old) I don't need a smartphone. What I need to do with it is check e-mails, maybe read some websites and use it for navigating. Since the display is usually bigger than that of a "normal" cellphone, maybe watch a video every now and then. The OS should preferably be Windows Mobile.

Hi, do you know that you can install Java applications into your SE phone?

Gmail mobile for email reading,
Opera Mini for web browsing that saves mobile traffic,
and Google maps mobile for simple navigation (might require a standalone bluetooth GPS receiver if your mobile network doesn't support positioning).

Point your phone's browser to http://mobile.google.com
http://operamini.com

All the mentioned applications are completely free and localized (including German).

Yes, I know, but Internet connections over UMTS would be too expensive for me. I was asking for WLAN devices since WLAN usage would be free for me (because of the phone contract I have with T-Home that includes a WLAN Hotspot flatrate).