[AT&T Samsung Galaxy Note I717] littlewierdo:
Unfortunately, this thread (partly due to the attitude of the OP) turned into a pissing match (apparently you dont know much about technology, Ill talk to a dev and come back to tell you how wrong you are, etc.).

There is a setting under Settings->Display->Adjust screen quality to conserve battery. You can try toggling this to see if it helps.

Personally, I dont see the complaint as being really all that valid. The only cell phone that has anything significantly above this is the iphone / ipad and this is because Apple designs the processor in house and designs the software to work with the processor they designed, again all in house. And of course, the screen size of the iphone is much smaller. Sure, you might find an Android phone with 5-6 hours screen on time but I guarantee you arent going to find anything much higher than that.

Nearly every battery powered device I have that has a screen gets terrible battery life. My laptop Im lucky if I get 3 hours out of. My portable dvd player? Maybe 4 hours. My old portable tv? Maybe 3 hours.

The point is, show me a cell phone that gets more than 5 hours of screen time without taking extreme measures to do so (yea, thats right, putting your phone in airplane mode with the screen on is cheating).

Youve really got 2 options.

1. Conserve battery power being used by other resources that you dont need to have on (wifi, gps, bluetooth, cellular data), turn down the screen brightness, make sure you arent using a task killer to automatically kill tasks when they start, make sure you have manually updated all of the pre-installed apps (for example, Google Maps is a HUGE battery killer on the stock rom but if you manually look it up in the play store, tap on it, you will get the ability to update it) because many of the stock 'bloatware' apps or pre-installed apps are not correctly linked to the market so it will not see them as being installed and therefore not appear in your list of installed apps in the Play store and finally since they arent listed you would never know they can/need to be updated unless you manually look them up. The point being, if battery power isnt being used by other things, that leaves you with more screen time. That was the point of this suggestion.

2. Purchase extended batteries, multiple batteries, or an external charger battery.

- Seido makes a great extended battery but makes the phone thicker on the bottom half and weigh a bit more, and it costs $70-80.

- Multiple batteries do not increase the size of the phone, they are pretty cheap, but also tend to be cheaply made and carry the potential of leaking or bloating inside the phone potentially causing permanent damage - they also require you to power down the phone to swap batteries, and lastly, they are a pain to charge unless you also buy a battery + cell phone charger/dock.

-There are many external battery bricks you charge separately at home via a USB plug and when you leave the house, take the brick and phone USB cable with you, when your phone needs to be charged, plug it into the brick battery. The negative is that you have to carry the brick with you, the positive is they are cheap. Duracell makes one around $30 that can charge the Note twice. There are others at around $60-80 that can charge the Note four times (remember, the Note battery is 2500 mah so if you find a brick that does 10,000 mah or more, that will charge it four times). Oh, and these dont require you to power down your phone to swap batteries but they do require you to be tethered to the brick while your phone charges.

Dont insult people trying to help.

And dont play the 'I know more than you do' card, you'll loose every time. There will always be someone who knows more than the person who thinks they know everything there is to know and will bring up a point or suggestion that wasnt thought of.

Learn to work around your technologies weaknesses. There isnt a single 'perfect' device but I have learned to work around their weaknesses by first purchasing the device with the most functionality and whatever is left that it doesnt do, I purchase accessories to accomplish this task. My Note doesnt have an FM transmitter (why phones dont have them built-in is beyond me). So I bought a bluetooth FM transmitter so I could listen to podcasts and audiobooks in my work truck. If I didnt get the battery life I needed, Id look into one of the options I listed above.