The battle for control of the smartphone market between Korean competitor Samsung and US heavyweight Apple is ongoing. Apple entered the mobile phone industry in 2007 without any experience in developing mobile phones or smartphones, since 2007 Apple has become the leading smartphone company. However, unlike Apple, Samsung had the same experience in mobile phone development, but could hardly catch up with Apple in smartphone development. The smartphone is all about the software and how it works, Apple did a great job changing the phone industry by announcing the first ever smartphone in 2007. However, Samsung is trying to bridge the gap by introducing the Galaxy S4. Comparison between Galaxy S4 and iPhone 5s in terms of design, display, performance, software, security and camera. Neither Samsung nor Apple have chosen to completely redesign their latest smartphones. The iPhone 5S is identical to the iPhone 5 and has exactly the same dimensions of 124 x 59 x 7.6 mm and a weight of 0.112 kg. The Galaxy S4 is also nearly identical to the Galaxy S3, with a design measuring 137 x 70 x 7.9 mm. Even though the Samsung Galaxy S4 is 0.112 kg heavier and larger than the iPhone 5S, it is more comfortable to hold. That's because the Samsung has a body with rounded edges that makes it fit more neatly in the hand than the hard-edged iPhone. However, Apple has Samsung beat in terms of build quality. Samsung uses polycarbonate (a fancy word for plastic) in the making of its devices; this technique makes the more expensive device seem quite cheap. The S4 is shaped like the S3 with a polycarbonate back cover and metal sides, which feels less solid than the 5S. Apple, on the other hand, uses an aluminum unibody design, which makes the smartphone more grooved. As for the display, I...... middle of paper......0% while the iPhone 5S was only down 12%. In terms of specifications, the Samsung Galaxy S4 seems better. The most convenient device, however, is the iPhone 5s; we can clearly see that it surpasses Samsung Galaxy S4 in many categories such as design, software and security, camera, battery and storage. Some users prefer to buy Galaxy S4 instead of iPhone 5s because it supports flash technology, which may damage the device. In conclusion, Apple surpasses Samsung in important and important categories such as design, camera, performance, software, security and battery life. . However, people are interested in the design of the phone, how it feels in hand and how big the screen is. Therefore, some may say that Samsung Galaxy S4 is more affordable than iPhone 5s but the reality says that iPhone is more reliable and affordable than Galaxy S4.