Understanding Cell Signal Strength

RSSI = Received Signal Strength Indicator. The closer to 0, the stronger the signal. RSSI = Noise + Serving Cell Power + Interference

RSSI	Signal strength	Rating
>= -65 dBm	Excellent	Premium signal strength
-65.1 to -75 dBm	Good	Strong signal strength
-75.1 to -85 dBm	Fair	Marginal signal strength
-85.1 to -99 dBm	Poor	Degraded signal strength
< -99 dBm	Deficient	Signals are unstable

RSRP (RSCP) = Reference Signal Received Power is a measurement of the “strength” of the signal received over the full bandwidth

RSRP	Signal strength	Rating
>= -80 dBm	Excellent	Premium signal strength
-80.1 to -90 dBm	Good	Strong signal strength
-90.1 to -110 dBm	Fair to poor	Subpar signal strength
< -110 dBm	Deficient	Signals are unstable

RSRQ (ECIO) = Reference Signal Received Quality indicates the “quality” of signal factoring in RSSI, block resources and full bandwidth

RSRQ	Signal quality	Rating
>= -10 dB	Excellent	Premium signal with minimal interference
-10.1 to -15 dB	Good	Strong signal with moderate interference
-15.1 to -20 dB	Fair to poor	Subpar signals with moderate interference
< -20 dB	Deficient	Signals are unstable

SINR = Signal to Interference plus Noise Ratio is ratio of “quality” (strength vs interference & noise) of the connection

SINR	Signal strength	Rating
>= 20 dB	Excellent	Premium signal with minimal interference
19.9 to 13 dB	Good	Strong signal with moderate interference
12.9 to 0 db	Fair	Subpar signals with moderate interference
< 0 dB	Deficient	Signals are unstable