Another way to think of them is that they arePDAs that can make voice calls like any other mobile phone. Older phones also used computer technology, but lacked many of the parts of a computer that were too big to fit into a phone. Modern phone makers have been able to use smaller parts. Most smartphones are alsoGPS receivers anddigital cameras.
Data communication has become faster. Smartphones can send and receive data much faster than older phones. The industry uses different standards to label the data transmission rates.2G was introduced in 1991. 2G means2ndGeneration. 2G phones transmit data at about the same speed as a 56 kbit/s (kilobits per second)dial-up modem would get.
3G was introduced in the early 2000s. Depending on where they are, 3G phones vary in speed between about 200 kbit/s to 14 Mbit/s (megabits per second). This is comparable to aDSL or low endcable modem speed. Most smart phones use 3G technology to make them fast enough to practically useinternet and other data features. Faster4G networks operate in many places, with speeds estimated as fast as 100 Mbit/s to 1 Gbit/s (gigabit per second). This is as fast as some computer networks that useEthernet. Many smartphones introduced after 2010 use4G technology includingLTE, as later, even faster version.5G was introduced in a few places in 2019.
Smartphones are powered byrechargeable batteries. The amount of energy they can store is reduced over time, and they become weaker. With less power, a smartphone may not be able to perform as well as or for as long as when it was new. Until 2010, most smartphones were made so that the user could replace or remove a weakened battery.[3] Most newer smartphones do not give users this ability.[4]
Many smartphones today havecameras built into them. They are usually not as capable as dedicated cameras. Some phones have sophisticated camera software allowing such features as independent setting ofbit rate,framerate andresolution.[5] Such controls have only been adapted starting in the mid-2010s. As of early 2021, mobile phone chipsets may be capable of 2160p4K video capture at 120frames per second.[6]
.JPG)
