Color:850/1900MHz-Car Use Note: If there is no outside signal, the booster will not work for you

Does Phonetone booster work for your location? A cell phone could use different frequency band at different locations, it is very important to confirm if your cell phone works on same frequency band as the cell phone booster

To check which band your cell phone uses: For iPhone Dial *3001#12345#*, then press Call button Click 'Serving Cell Info' Check 'Freq Band Indicator'; For Android phone  Download and install the app: LTE Discovery  Tap ‘SIGNALS’ and check band number Specification: Frequency Range: Band 2 and Band 5 Max Output Power: 20dBm Max Gain: 45dB I/O Port: FME-Male on both ends Main Power: Car Charger Input DC 12~24V, Output DC 5V Package: 1 * Booster 1 * Power Adapter 1 * Mounting Screw Kit 1 * English User Manual 1 * Inside Antenna with 3m Cable 1 * Outside Antenna with 3m Cable Warning: This is a Consumer device

Before use, you must register this device with your wireless provider and have your provider's consent

Most wireless providers consent to the use of signal boosters

Some providers may not consent to the use of this device on their network

if you are unsure, contact your provider

You must operate this device with approved antennas and cables as specified by the manufacturer

Antenna must be intalled at least 20cm (8 inches) from any person

You must cease operating this device immediately if requested by the FCC or a licensed wireless service provider

E911 location information may not be provided or maybe inaccurate for calls served by using this device.