Edited

This post has been edited by UserU: Sep 19 2011, 12:01 AM

If your device is rooted, you can either use App2SD or Terminal Emulator to set the default installation dir to SD card.

If not rooted, then head to Settings> Manage Applications and then choose which app to transfer to SD card. Only one at a time.

Just head to Settings > About device > Software Update

Yes, if they have sufficient RAM and storage. For instance, I've a Galaxy Ace that runs on Jellybean.



That's the last official update for the Gingerbread OS.



Yes, you will need a custom ROM. But you'll have to first root your phone to unlock it before installing it.

Just set the brightness level to nearly the lowest for a better battery life. Plus, you won't be squinting at the screen since its still clear, especially when using a dark background.

In my honest opinion:
Pros: Disable those unneeded processes before they could re-launch themselves.
Cons: If you've a few unneeded processes, the Task Killer could consume more processes than those unneeded ones.

But if your device is running on Gingerbread and later, you can long press on the Home button to bring out the Task Manager.

Go to Messages, press on the Menu button(beside Home) and then Settings.

Scroll down until you see the MMS settings. Ensure that auto-retrieve is on.