Sell 2g 3g 4g Tri Band Band1/3/8 cell phone signal amplifier booster repeater GSM WCDMA UMTS LTE 900/1800/2100mhz ，ceiling/LPDA antenna best price

Dear everyone, please read the following first: The model works in 900MHz, 1800MHz and 2100MHz three frequency bands. When the frequencies match, it can work. Usually works in 2g, 3g and 4g networks. Please confirm the 4g frequency with the SIM card service before purchasing. Thank you! Working principle: The signal repeater only improves the indoor signal through the good outdoor signal. Note: If the frequency is not matched, the signal booster cannot work. How to choose the right signal booster? First of all: Before buying, please make sure to get an outdoor signal of at least 3 bar (place an outdoor antenna), otherwise the product will not help. A good outdoor signal is needed to improve the indoor signal. Second: There are some ways to check the frequency: (the frequency does not match, the signal booster cannot work.) There are some ways to check the frequency: -Android phone Downlaod application is called ( Network Cell Info Lite ) ``The app will inform the number of LTE bands [display band 3] -iPhone Dial * 3001#12345#* Doraemon Service Information Check the frequency band indicator, the number is the LTE band Band1 = 2100MHZ = choose 2100MHz repeater Band2 = 1900MHZ = choose 1900MHz repeater Band3 = 1800MHZ = choose 1800MHz repeater Band4 = 1700MHZ = choose 1700MHz repeater Band5 = 850MHZ = choose 850MHz repeater Band7 = 2600MHZ = choose 2600MHz repeater Band8 = 900MHZ = choose 900MHz repeater Brand Name: OSERJEP Model Number: KW20C-GDW Uplink:890~915/1710~1785mhz/1920~1980mhz: Downlink:935~960mhz/1805~1880mhz/2110~2170mhz Work system : 2g+3g+4g (900/1800/2100mhz) Feature: LCD Display; low radiation,low consumption Cover Area: 300~800 Square Meters without any barrier Output Power: 20dBm Gain : 65dB Power supply: AC 100~240V, 50/60Hz ;DC 12V 2A Type: Full kit . wall installation, easy to install External Log-periodic antenna: 10dB gain, 800~2700mhz, n female connector Internal panel antenna : 9db gain,700~2700mhz , n male connector Package Include : 1 x 900/1800/2100MHz signal booster. 1 x LPDA Outdoor Antenna 1 x ceiling Indoor Antenna 1X 50-5 10meters cable 1x Power adapter 1 x Manual #signal booster #Cell Phone Booster #Mobile Signal Amplifier #4G signal