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iPhone4S Battery Life Beats HTC Android Phones, Why ?
In the year and a half since it came out, the iPhone 4′s specs have been beaten by Android "superphones" in nearly every way: Screen size, processor power, and wireless Internet speeds
In the year and a half since it came out, the iPhone 4′s specs have been beaten by Android "superphones"
Despite increasing in performance, the new iPhone 4S also managed to improve on the battery life. Here's how Apple manages it:
An enormous (but vibrant) AMOLED display, like on Google and Samsung's Nexus S, uses an enormous amount of power. And Android smartphone screens have reached up into the 5-inch range (on the Samsung Galaxy Note) and beyond: The original 7-inch Samsung Galaxy Tab was technically able to make phone calls. The iPhone, in contrast, has stayed at the same 3.5 inch screen size since its creation, which is also one of the reasons it's able to offer Retina Display capability.
No 4G LTE
The iPhone 4S now offers HSPA+ "4G" wireless Internet speeds, which -- as one of the slides in Apple's presentation showed -- are equivalent to those of some HSPA+ 4G Android superphones. It doesn't use a much faster 4G LTE connection, though, and those connections are among the big reasons why Android superphones have terrible battery life (http://www.batteryfast.co.uk) . Moreover, as Anand Lal Shimpi of Anandtech explains, a 4G wireless radio means a bigger battery and bigger chassis … which also helps to explain Android superphones' big screens.
RAM is different from the flash memory used as storage by the iPhone 4S and other smartphones. Like on a desktop or laptop computer, it's the iPhone's short-term memory: The programs it's currently running (and the websites that it has open) are all loaded into RAM, so that it can switch back and forth between them more quickly. It's like keeping something foremost in your mind, instead of having to take a moment to remember it. The problem is, in exchange for being faster RAMuses more battery power. And RAM has to be turned on all the time, in essence, so a device that has more RAM also has lower battery life.
The iPhone 4S has the same 512 MB of RAM that the iPhone 4 does, while Android super phones have up to 1 GB (1024 MB). Just like with 4G LTE connection speeds, this makes them much faster … and makes them burn out much faster as well.
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