Tmobile might know its a problem but just wanted to say something.
But saying it has 4GB rom but only giving 2gb is unexceptable. I remember on my nexus one when it came with 2.1 only gave us like 100mb free space out of the 512. But once froyo hit it freed up half that ram and now we have 230 free.
I wouldn't be surprised if the desire z has 4gb of rom but HTC sense and their apps are using most of it.
Dude, my N1's memory never changed - you must have lucked out.
what does it show?
Too be honest, I don't know - I just know I had about 25mb free before 2.2 and after the final 2.2 update and into 2.2.1 I still only have around 20 - 25mb free. Really havent had any room to install any new apps either.
That's the annoying part about these phones with only 512MB of RAM. Phones like the Evo, Galaxy S, iPhone, and Nokia phones with these high amounts of internal storage such as 8GB, 16GB, 32GB, etc put us to shame.
Still the cap with 2.2 and lower is about 1.8gb of internal app storage. Even then, most people start running into problems after 400 to 500mb, since Android will start showing "Low on space" errors, even though they have hundreds or even a gig left of storage space (Android bug- BIG bug).
Even though there is apps2sd, the constraint is STILL the device space. Examples of apps:
Google Earth puts 15mb on device and 15mb on sd
NOVA puts 15mb on device and couple hundred mb on sd
Sandstorm puts 16mb on device and couple hundred megs on sd
If you start adding the apps up, apps2sd is still constrained by device storage and Android 2.2 and lowers design. Most 3D games put at least 10mb on device storage.
Both games (NOVA and Sanstorm) rock, BTW