User's Manual
Table Of Contents
INTRODUCTION
SureCall TriFlex - A Kit for Home/Office Cellphone-Mate, Inc. Page 2
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Introduction
Congratulations on purchasing the SureCall TriFlex - A kit for 2G-3G, all carriers,
and 4G LTE for AT&T, the finest cellular signal booster available!
SureCall adjustable cellular boosters and kits from Cellphone-Mate remove the
frustration over dropped calls, limited range, and slow data rates by amplifying incoming
and outgoing cellular signals in buildings, offices, and homes. The TriFlex is designed
with leading-edge technologies to detect and amplify weak incoming signals your
cellular device would otherwise miss and to broadcast a significantly stronger signal
back to the cell tower.
This guide contains all the information you need to get your SureCall TriFlex booster
system up and running.
Principles of Operation
The SureCall TriFlex is a high-quality bidirectional signal booster that boosts cellular
signals for areas prone to weak or shadowed cellular coverage.
The TriFlex works with two antennas
:
x An inside antenna that communicates with your cell phone.
x An outside antenna that communicates with the cell tower.
Signals sent from a cell tower are received by the outside antenna, amplified by the
booster and then sent to your phone via the inside antenna.
When your phone transmits, the signal is sent to the inside antenna, and then sent to
the cell tower via the outside antenna.
Some cell signal is required for the TriFlex to enhance cellular signal coverage. The
weakest cell signal for the TriFlex to work is low -100dBm to high -90dBm. dBm is
an abbreviation for the power ratio in decibels of the radio power per one milliwatt.
To measure your existing cell signal on an Apple iPhone, dial *3001#12345#*and
press Call. In the top-left corner, a number appears instead of bars.
For Android devices, you can download several apps to measure exact signal
strength. Look up check real signal strength to find a cell signal measurement
app.