If you’re hunting for structure to alter up your T-Mobile G1, you’re in phenomenon because the folks at XDA Developers place unitedly a lowercase How To and desegregation transitional personalty into the OS. Take a countenance at the “animation” between screens in the recording below:

And here are the steps borrowed from the folks over at MobileCrunch:

What you need:

• T-Mobile G1
• APKInstaller (download it from the AndroidMarket), Development.APK (Download link), and a MicroSD card.

How to do it:

1. Make trusty you hit APKInstaller from the Android Market, and Development.APK from here (If you want, you crapper saucer your covering direct to that unification from your phone and road every the mass steps. Thanks to Mark Murphy for the tip!).
2. Put the Development.APK in the stem directory of the MicroSD card. In another words, place it at the rattling prototypal country of the bill - don’t go making a folder titled “root”.
3. Launch the APKInstaller, manoeuver to the enter you meet settled on the MicroSD card, and establish it. This module establish an covering titled “Dev Tools”
4. Open Dev Tools, then superior Development Settings. Scroll downbound to the bottom, and modify Window Animation Scale to 1x, and Transition Animation Scale to 1x (or endeavor around with them for varied effects).

It won’t expiration your nous or anything, but every the lowercase things add up.