RF transceiver cuts need for SAW filters, LNAs

What is a transceiver?
Transmitter and receiver housed in a single unit and sharing some circuits; An electronic device or circuit that transmits and receives analogue or digital signals.

What is RF? What is an RF tuner?
Radio frequency (RF) is the range of electromagnetic frequencies above the audio range and below infrared light (from 10kHz to 300GHz).
RF tuner
An RF tuner is a circuit module or standalone equipment that detects radio-frequency (RF) signals usually of low amplitude and amplifies and converts them to a form suitable for further processing.

What is 3G?
Third-generation technology; Usually used in the context of cellphones designed for high-speed multimedia data with speeds ranging from 128Kbps to several megabits per second.