Android Core Basics

• Third generation mobile communication technology (3rd Generation), supporting the high-speed data transmission of cellular mobile communication technology. The main difference between 3G and 2G is the speed at which data is transmitted.
  • 1987, the first analog phone (1G) came out, only voice calls, model: Motorola 3200.
  • 1995, the first GSM, CDMA digital Phone (2G) came out, increased the ability to receive data, model: Ericsson GH337.
  • 2000, the first 3G mobile phone, model: Nokia 6650.

• Current domestic support ITU to determine three 3G wireless interface standards
  • CDMA2000 (used in Japan, South Korea and North America) for China Telecom operations
  • WCDMA operated by China Unicom (the standard used by most 3G networks in the world)
  • China Mobile operates TD-SCDMA (used in)

• Mastering the Mobile Internet has mastered the future
  • Who loses in the mobile internet, who loses the future, who seize the opportunity of the mobile Internet, who has the future of successful tickets.
  • With the speed of the network faster, more and more portable hardware performance, the price is getting lower, mobile internet will become the future trend, Moore's law.

• A mobile device operating system released by Google.
• Features: Open source, free.
• Hardware prices from low to high, to meet the different income groups 100RMB~2WRMB.
• In 2011, Android's market share in the world surpassed the Symbian system for the first time in the world.
• Android is widely used in mobile phones, televisions, microwaves, watches, glasses, etc.

• The father of Android: Andy Rubin
• In October 2003, Andy Rubin led the creation of a company, called Android, to start developing an operating system for mobile phones.
• In August 2005, Google's low-key takeover of the company and its team, Andy Rubin became vice president of engineering at Google and continued to take charge of the Android project.
• In November 2007, Google officially unveiled the Android-based operating system and announced the creation of a global alliance of 34 handset makers, software developers, telecoms operators and chip makers, Together, they built the earliest ecosystem of the Android system.
• Android's market share in the world leaped first in 2011, and its current main competitor is iOS.

• 1.5 Cupcake (Cupcake)
• 1.6 Donut (Donut)
• 2.1 Eclair (Lightning puffs)
• 2.2 Froyo (Frozen Yogurt)
• 2.3 Gingerbread (ginger cake)
• 3.0 Honeycomb (Honeycomb)
• 4.0 Ice cream SandWich (ice cream sandwich)
• 4.1 Jelly bean (Jelly Bean)
• 4.2 Jelly Bean (Jelly Bean)
• 4.3 Jelly bean (Jelly Bean)
• 4.4 Kitkat (a chocolate from Nestle)
• 5.0 Lime Pie (lime pie)

Android Core Basics