Connectivity in Android

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What is Integrated Digital Enhanced Network (iDEN) and Evolution-Data Optimized (EV-DO, EVDO) in Android Devices? What uses do that have and how do we implement them?

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Anil Meenugu On

Integrated digital enhanced network (iDEN) is a mobile telecommunications technology from Motorola. Although mainly a cellular network technology, iDEN is best known for supporting cell phones with push-to-talk (PTT) capability that function as walkie-talkies. Although iDEN has some similarities with traditional PTT systems, it also offers many advantages.

http://www.techopedia.com/definition/7670/integrated-digital-enhanced-network-iden

What Is EV-DO?

EV-DO is a high-speed network protocol used for wireless data communications, primarily Internet access. EV-DO is considered a broadband technology like DSL or cable modem Internet services.

http://compnetworking.about.com/od/wirelessinternet/g/bldef_evdo.htm