feelings after upgrated the Galaxy Note 2!
One of my sister's Note 2 has been updated to 4.1.2 months ago with help from my friend and at that time my sister and I was really surprised what a massive battery it had drained! The major reason why she purchased the Note 2 is the great battery life, but what happened? Since it had upgraded to 4.1.2, it can’t go the whole day without recharging as but only a day and a half on a single charge before.
Regret to upgrade 4.1.2 and do not want to wait for other new version which MAY PROBABLY fix the bug…we didn't realize to revert back to 4.1.1 at first and she was kicking herself for doing the upgrade, so my first suggestion is to save the Note 2 was extended battery. I got a MPJ 8500mAh extended battery( I love this brandXD)for her…it become a bit heavier, but double battery life…And then, she decided to revert it back to 4.1.1(i helped her this time )
I did a hardreset first but nothing changed and I thought I had to reinstall 4.1.1 no matter how.Then I cleaned install and later cleaned install of the 4.1.2 update. Back to 4.1.1, I felt the note 2 battery life unprecedented great (no any psychological issue I thought!)