Title says it all - iPhone 3G apparently has trouble keeping up with indexing, ever since 3.x. Two days ago, I turned off Spotlight search (Settings-General-Home Button-Spotlight search-switch off all you don't use) because I rarely, if ever, used it.
Up to this day, my poor old 3G with iOS is way snappier than it was before, and I wouldn't hesitate to say it's as snappy as with 3.1.3. Stutter while open/close transitions is gone and apps load way faster. I've compared it to some youtube videos (YouTube - iOS 4 Performance on iPhone 3G (Camera and Settings)) and mine on iOS 4 performs almost as fast as theirs on 3.1.3.
This is not even a "Restore as new phone" install - it's restored from backup that has 7,5 GB out of 8 GB filled.
Please try this if you find your 3G struggling with iOS 4 and report back.
Up to this day, my poor old 3G with iOS is way snappier than it was before, and I wouldn't hesitate to say it's as snappy as with 3.1.3. Stutter while open/close transitions is gone and apps load way faster. I've compared it to some youtube videos (YouTube - iOS 4 Performance on iPhone 3G (Camera and Settings)) and mine on iOS 4 performs almost as fast as theirs on 3.1.3.
This is not even a "Restore as new phone" install - it's restored from backup that has 7,5 GB out of 8 GB filled.
Please try this if you find your 3G struggling with iOS 4 and report back.