How to change preferred network type Android

Preferred Networks is connected to the internet over multiple, very high speed fiber-optic links to links provide you with multiple paths onto the Internet for reliability and the fastest possible connection .

Procedure

CDMA is a set of protocols used in 2G and 2G mobile communication networks. LTE is a protocol used in 4G broadband technology and has high-speed data access . 2. Transmission Standard. CDMA uses Spread-Spectrum Multiple Access, SSMA for transmission.