In android API , depends on which generation mobile connects to , provide ARFCN , UARFCN and EARFCN . What is difference between them ?
ARFCN - absolute radio-frequency channel number. Identifies two separate radio carriers, one for uplink and one for downlink in GSM frequencies.
UARFCN - UTRA Absolute Radio Frequency Channel Number. Identifies the uplink and downlink in UMTS frequencies. Its simply a unique number form which the uplink and downlink frequencies can be calculated.
EARFCN - EUTRA Absolute radio-frequency channel number. Identifies the uplink and downlink in LTE frequencies