|Battery - Pros & Cons|
1. Battery capacity upgraded to 2,600mAh, up from 2,100mAh on the GS3.
2. A full day of moderate usage. From 8 hours to 14 or 15 hours of regular use out of the battery cells. With the screen's brightness ranging betwixt 50% and 75%, 4G switched on, and a few apps and services running in the background, you can get through a full day with moderate use.
3. Nine hours long continuous video playing at 40% to 50% brightness.
4. When the phone is not in use and is idling, it doesnt drain any considerable power.
5. Battery is removable. Can change batteries or more importantly, can pop in a more powerfull battery. On the other hand, when integrated batteries wear out and no longer holds a charge (or screen cracks, speakers fizzle out or you mess up your aux jack), you have to drop the phone. The HTC One is unrepairable.
6. 2,600mAh battery is removable. You can use a spare if you like. The spare battery will take the space of the charger. She said you dont carry both. If you actually carry one (charger), dont let her find out where you stop to refill it in the way back home.
7. If you stream HD Netflix videos constantly, mind that, it dies in about five hours during such a continuous catastrophe.
8. With Power Saving Mode, you can limit processor speed, screen power and haptic feedback.
9. You can controll display brightness directly from the notification bar. Thus the main power sucker can be controlled too easily.
10. S4 will last for seven hours during a continuous surfing period which include both text and images. Droid DNA manages for five hours and HTC One dies before five-hours.
11. Does not beat the Motorola RAZR HD. But better than the Sony Xperia Z.
12. Background syncing processes wont juice down battery like crazy.
13. To do mostly text based things like checking email accounts, social networks etc, it will give you a full day. In most cases, at the end of the day, you can manage to spare even 50% of the cells.
14. You can have your lunch. Not necessary to have the lunch and plug the phone to a socket at the same time and check out for bars.
15. The stand-by has had a substantial improvement.
16. Can be preserved avoiding 4G and keeping screen brightness down.
17. 17 hours of talk time.
18. A 30 minute music playing will drop battery by about 3% (Bluetooth headphones jacked in).
19. Streaming video over 4G for 30 continuous minutes (full brightness on), will drain down about 9% of the battery cells.
20. Downloading heavy media files, app files or games (ex: 10Mb) over 4G, will cost about 4% from the cells.
21. Camera features wont suck much. Taking couple of snaps and capturing videos of few minutes, are power efficient.
22. Apt for the regular usage of a modern citizen, starting the phone at 7am, browsing the web and tweeting for a couple of hours, two hour-long vanilla satellite navigation, Samsung's "Driving mode" turned on, he will get the last few drops of power by 5pm. A full day's considerable use of browsing, gaming, email checking reserves a bit for video playback on the way back home.
23. The battery can be wirelessly charged using a Qi standard special charging pad (sold separately) that utilizes magnetic resonance to produce a magnetic field through which power can be transferred.
24. Using the Sprint Galaxy S4 in New York City on 3G and 4G, one journalist managed to get 14 hours of normal use. It involved three hours of screen-on time, browsing and social networking over 3G, 4G and Wifi, and extensive use of the camera app. Half of that time he had the S4 set to automatic brightness. The rest of the time he manually adjusted the screen to between 50 and 75 percent brightness for improved visibility. "It's particularly impressive to see this kind of battery life given the variable network conditions we were up against on our CDMA/LTE Galaxy S4," he writes.
25. Automatic brightness.
1. Of all techs, Portable Power systems (I meant battery) evolve the slowest, the least. RAM or processing are progressing by leaps and bounds. Did I say something about S4?
2. A High Resolution 5- inch (full HD) display, a number of sensors, a plethora of advanced camera features, software gimmics and powerful processor cores will drain your battery more quickly.
3. Powered by a Li-Ion 2600 mAh battery which does not seem to be enough, as the processor is whopping eight cores.
4. The screen is the biggest culprit in the battery drain. 1080p SuperAMOLED display takes the grandest labour on the Galaxy S4's battery life (besides that, you wont notice any severe  battery drain in any of the bundled apps).
5. A marginal improvement in continuous video playing compared to other devices.
6. Air Gesture, Air View and Smart Scroll drain battery juice heavily.
7. Low or poor signal areas also contributes tremendously towards fast battery drainage.
8. Is not even close to RAZR MAXX HD in battery performance. Does not beat the Motorola RAZR HD. Its probably better than the Sony Xperia Z, but if you are after the battery life, go for RazrMaxxHD.
9. LTE will suck more power.
10. With heavy usage, you will have to recharge it after 6 to 8 hours.
11. Worst, "Takes" time to get it fully charged. Takes couple of hours to get a full charge.
12. The 1.6GHz Exynos 5 eight-core powered version of the phone was initially expected to hit the UK. Instead the 1.9GHz quad-core option will be shipped to British shores which lacks the battery saving enhancements promised by its eight-core sibling.
13. Heavy use with full brightness on and on 4G network - the most diabolic things turned on - it eats half of the battery within 3 hours.
14. Even the phone is used lightly, it wont make it to the night. It still needs a charge in the eve. Have to charge it every night in other words.
15. If "Heavy Use" meant 10% of the battery in fiction, you could be in the safe zone for 10 hours. But the most reported time from users for heavy usage is 5 hours.
16. You can save energy through few tricks. But If you switch off all the bells and whistles and other power suckers, what is left in your hands? Its just another Android smart phone. No longer what you paid for, S4!
17. Video playback and web browsing consumption has only been improved a bit.
18. Pack Mentality: Multiple back-up batteries, you may never use them even. When the phone is hagged and out of fashion, they will be just another pile of garbage. You cannot pop in a S4 battery into S5 or S6.
19. You get insurance with other unibody phones. If your battery goes out, they'll replace it for free.
20. Batteries usually last for 2 to 3 years. Can battery removability be an issue?
21. "I've been using cell phones for about 12 years now. Never had to replace a battery. I also have about 100 gigs of free online cloud storage," one user comments.
22. The widest selection of non-touch controls. Some of them are better than others and all of them consume battery like it's going out of fashion.
23. Integrated battery last longer because it is less affected by the environment and never really discharged.
24. Integrated batteries are more likely to be recycled with the phone than just sit in a drawer somewhere.
25. iPhone 4 replacement battery is between $8 to $15. Besides, you dont have to replace something until it breaks!.