4G is for Data. Voice and text (SMS, MMS) users don’t care about 4G. 4G doesn’t carry voice, except as voice over IP (VoIP) such as Skype and Vonage.
|Long Term Evolution (LTE)||WiMax|
|Standards Body||3GPP||Institute of Electrical and Electronics Engineers (IEEE)|
|Vendors||VerizonAT&TMetroPCST-Mobile||Clearwire and Sprint|
|Spectrum||1.4 MHz through 20 MHz||2 GHz through 66 GHz3.5 GHz (international standard)5.8 GHz (US license-free)2.5 GHz, 2.3 GHz, 3.65 GHz|
|Download speed||5 – 12 Mbps||2 – 6 Mbps|
|Upload speed||2 Mbps||1 Mbps|
3G download speed: 0.4 – 1.7 Mbps
3G upload speed: 0.4 – 1.2 Mbps
Cable modem download speed: 15 Mbps
Cable modem upload speed: 3 Mbps
Low spectrum: low bandwidth, greater distance and penetration
High spectrum: more bandwidth, shorter distances, blocked by obstacles
iPhone 5 and 4G: So if 4G is for data, can I do voice over CDMA while doing data over 4G? No.