INTRODUCTION-• Smart Phones are defined to

be enhanced mobile phones that perform functionalities other than the typical phone.

• These enhanced features can be anything from email and internet to a full keyboard.

• The definition of “smart “ keeps changing as more and more new functions are introduced to mobile phones.

Background Info

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Comparison of two Smart Phone

iPhone 5sVs

Samsung Galaxy S4

The new normalJust like when we compared the Galaxy S4 to 2012's iPhone 5, we're looking at a big difference in overall size. Samsung's phone is ten percent taller and 19 percent wider than the 5s. Both phones are pretty thin, but the GS4 is also four percent thicker.During the last couple of years, Android phones have completely rewritten the definition of a "normal" sized smartphone. The iPhone used to be considered the standard; now it looks very small next to its competitors, including the GS4.The iPhone 5s is 14 percent lighter than the GS4, but both feel extremely light in hand. When you look at relative weight (weight-to-surface-area ratio), the GS4 actually measures in at 11 percent lighter.

Big screen, small screenScreen size is still one of the biggest differences between these two phones . If you're comfortable with the Galaxy S4's feel in hand, then you'll get to reap the benefits of a much bigger display. The Galaxy S4's screen also takes up a higher portion of its front face, and provides a much bigger window peering into your apps, games, and videos. We don't think screen quality is an issue on either phone. There are, however, a few key differences. The GS4's is much sharper (441 pixels per inch to the iPhone's 326 PPI), though we're really comparing The GS4's AMOLED display also saturates colors more, Many customers still enjoy the iPhone's smaller screen. Galaxy S4's feel in hand and pocket, then there's really no benefit to going with a smaller screen.

VIP accessThe iPhone 5s' killer feature is invisible to the naked eye. It's the most consumer-friendly biometric fingerprint sensor that's ever been made.When setting up your iPhone 5s, you'll be given the option to activate Touch ID. Teach the phone your fingerprint , then set up a passcode. You'll be able to unlock your phone by holding that finger over the home button for a moment, while anyone else will need a passcode.The Galaxy S4 doesn't have a fingerprint sensor, but it will soon have a similar blend of security and convenience. Once it's compatible with theGalaxy Gear smartwatch (via a software update that is supposedly coming this month), you can set the phone to require a pattern lock if out of range of your watch.

Camera comparisonThe iPhone's shot looks more saturated, and has higher contrast. Both shots look very much like typical smartphone flash photography, but the iPhone's "True Tone" Dual-LED flash appears to make its look a little less washed out.If you're going to split hairs over photo quality, then we'd probably cast our vote for the iPhone. Especially when you throw in its terrific burst mode (which automatically chooses the sharpest shot) and slow-motion video features, we'd say its camera has the edge. But the GS4's camera is no slouch at all, and you could easily argue that its quality was at least as good in all of the above samples, apart from the last low-lit shots.

Battery life comparisonOn a technical level, the iPhone 5s has a 1,570 mAh battery, while the Galaxy S4 holds 2,600 mAh of juice. Based on our experience, both phones' batteries should last a full day for almost any kind of "typical" use.In our more formal test, where we stream video with brightness set at 75 percent, the iPhone 5s came out far ahead. It lasted about six hours and fifteen minutes. The GS4, meanwhile, only lasted around four hours and ten minutes.

Performance and processorsBoth of these phones fit that bill. The iPhone's A7 chip makes it the faster phone, and this is reflected in benchmarks. But at this point, that's almost like telling a soccer mom that this racecar is faster than that racecar. Both are extremely zippy and responsive, and likely far beyond what you'll ever need.The most notable item about Apple's A7 system-on-a-chip is its shift to a 64-bit architecture. This is significant for the future of not just iOS, but mobile devices in general. Though the iPhone 5s only has 1 GB of RAM, future 64-bit iOS devices could support over 4 GB, making mobile devices a bit more like their desktop counterparts. This could have a ripple effect throughout the entire mobile landscape, because as Apple goes, others tend to follow

Software features

iOS 7 is Apple's first big cosmetic makeover of its mobile operating system. In addition to its new flat design (fewer shadows, reflections, and simulated real-world objects), you get a few new features thrown in.Our favorite new feature is Command Center, Apple's better-late-than-never quick settings menu. Slide up from the bottom of the screen, and do things like toggle Wi-Fi or Bluetooth, adjust brightness, or change your music track. iTunes Radio also makes its debut in iOS 7 .iOS 7 also gives you improved multitasking, which now shows you live preview cards of your open apps. AirDrop also makes the leap from Mac OS X, letting you easily share media files with nearby friends (provided .

We could write a book on the software features that Samsung threw into the Galaxy S4, but we'll just stick to a few of the most memorable. We're looking at a laundry list of features, most of which we never used after our first five minutes with the phone. Most infamous are gimmicky air gesture and eye tracking features, which we never found very useful. Smart Stay, however, which keeps your display on as long as you're looking at it, is actually pretty handy.The Galaxy S4's similarly-exhaustive selection of camera features is a bit more practical. This includes not just the standard HDR and panorama modes, but a sports mode (simulates a much better camera's high shutter speed), a portrait mode (enhances and focuses on faces), and Best Face, which lets you, in a group shot, choose each person's best-looking face, before merging them into one final product

Samsung Galaxy S4

ConclusionIt's hard to go wrong with either phone, but they each have their pros and cons. The iPhone 5s is light and fits easily into just about any hand, but its screen is small and the phone is only slightly changed from last year's iPhone 5. The Galaxy S4, meanwhile, has a big and gorgeous display, but its construction looks cheap next to the iPhone, and many of its software features are gimmicky wastes of space.How do you choose? Well, we can't do that for you. But we think this will give you a nudge in the right direction, and help you to find the phone that works best for you.For more, you can hit up our individual reviews of the iPhone 5s andGalaxy S4, and our comparison of the three iPhones for sale this year.