User Manual
4
CELL PHONE SIGNAL BOOSTER CONNECT 4G
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Step 3: Measure Signal 
Strength For Inside 
Antenna Placement
Having an accurate measurement of signal strength in decibels (dBm) is crucial 
when installing your system. Decibels accurately measure the signal strength you 
are receiving. Test both 3G and 4G signal for best results by turning the LTE o in 
the carrier settings of your device.
SIGNAL STRENGTH EXCELLENT GOOD FAIR POOR DEAD ZONE
3G/1x
(typically voice)
-70dBm -71 to -85dBm -86 to -100dBm -101 to -109dBm -110dBm
4G/LTE
(typically data)
-90dBm -91 to -105dBm -106 to -110dBm -111 to -119dBm -120dBm
Turn o  your cell phone’s  WiFi to ensure you 
are checking the cellular connection. The dBm 
reading will be refreshed every 30-60 seconds. 
Want faster results? Once you have a reading, 
turn on  airplane mode.  Wait 15 seconds. 
Turn o airplane mode. The signal strength 
reading is refreshed.
Walk around your home/o ce taking signal 
strength readings until you fi nd the area that has 
the weakest reception, or number farthest away 
from zero. For example -100 is a weaker signal 
than -80.
Weakest Signal Number:___________ 
Weakest Signal Location: ___________
Place your Inside Antenna in this poor signal area 
on the fl oor and against the wall where you will 
mount it. For best results, keep the inside antenna 
more than 18 inches away from the booster.










