[T-Mobile Samsung Galaxy S II SGH-T989] Vlad_z:
I'm not sure if this would be of an interest for general public but those who like numbers can skip "OMG this/that SuperBattery/ROM/app let my phone run forever" statements.

I had read somewhere about similar testing for other phones (such posts are very rare). So I was curious to do such tests for my T989. And here we go:

SGS2 T989, ICS stock rooted/debloated ROM.

No Juice/CPU keepers/defenders/sleepers etc.

All syncs are manual.

All tests are done with dark background at 20% brightness if not otherwise stated.

Most of the time current jumps up and down so some results are with Low/High mA range.

Cell signal was -84dBm (pretty good 4 bars).

CPU was at default range 384MHz -1.5Ghz, ondemand.

Anker 2200mAh battery was at 80% - around 4V. When voltage goes down, the current would go up but I didn't bother to calculate in Watts instead because knowing ballpark in Amperes let you calc budget easier.

Deep sleep test.

In deep sleep,current stays below 10mA some of the time but every 5 sec jumps to 40/50mA, every 15 sec to 150mA. So, something is running on background giving an average of 11mA (somewhere around 0.5% of charge per hour).

If I put phone in airplane mode then there would be no jumps and average current will be 3/4mA. Over 10 hours (overnight) phone would loose only 1-2% vs. 5% when not in airplane mode.

Interesting, my previous phone SG S 4G had low current 2/3mA even when not in airplane mode. Well, anything running/looping on background (like sleeper script) would only consume more energy.

So, if you don't need to pickup calls at night - your best battery savior is an airplane mode... otherwise just put phone on a charger.

AMOLED Screen brightness test was done in airplane mode, idle:

Dark background 20% - 80/90mA, 50% - 110mA, 100% - 130mA

White background 20% - 120/130mA, 50% - 170mA, 100% - 250/270mA

This should give you around 10 hours of screen time if you say just reading white text on black background during boring intercontinental flight.

GSM voice call screen off - 280mA, screen on (speakerphone) - 350mA

(So basically, I can talk non stop for 2200/280 = 7 hours straight, not saying that I would do it :) )

Market apps update on WiFi - 250/300mA

SpeedTest WiFi - 450/500mA,

4G - 600/900mA (900 most of the time when uploading) (actual 4G speed was around 18Mb down and 5Mb up)

Everybody saying "too much 4G data will kill your battery" - but how much is to much? We can see that 2200mA budget enough for 2200/900 = 2.4 hours of intensive 4G usage. (There is some CPU part in it too)

And my cell signal was pretty strong, so wicker signal would require even more current to get your bits back and forth to the cell tower.

Anyway, in my case 4G requires double vs. WiFi.

CPU stress test 1.5GHz (364 Native Benchmark) - 570/600mA,

1.3GHz (402 Native Benchmark) - 460/480mA,

1.0GHz (506 Native Benchmark) - 350/390mA

You can see with performance goes power consumption... lowering from 1.5 down to 1.3GHz can save you around 120mA...

NetFlix playing through WiFi - 200/300mA, 4G - 240/600mA (600mA when loading buffer)

So, you can expect about 2200/300 = 7 hours of NetFlix from one charge.

Pandora, screen off, 4G - 70/350mA (350 when loading buffer 1/5 of a time)

Google Music screen on, local - 150/200mA, WiFi - 300/340mA, 4G - 500/700mA

I think Google Music buffering more then Pandora and I was not waited long enough... GM should consume about the same as Pandora.

Dice MP4, HW decoder, local video - 150/200mA

Google Map idle WiFi - 250mA, with GPS on - 350/400mA

Game Quell Reflection - 400mA (all the time)

Angry Birds - 250/350mA

Well, here are some of my screen shots as an illustration. Enjoy.