This mobile phone signal amplifier supports any phones for any Wireless Carriers in the frequency range :UPLINK 824 ~ 849MHz DOWNLINK 869 ~ 894MHz</br>Say goodbye to dropped calls in your home. Get fewer dropped calls better voice quality</br>This mobile phone signal amplifier could work for AT&T T-Mobile Verizon Alltel Cricket and more (not compatible with Nextel)</br>All parts included in the kit  easy to install</br>Money-back satisfaction guarantee</br></br>Product Description</br></br><b>NOTE :</b> <br><br> 1. This cell phone signal booster doesn't require a direct connection to your phone but rather works wirelessly. It can also work for multiple users at the same time. <br> 2. You should <b>get 2-3 bars of stable signal </b> in the location where the outdoor antenna is fixed in. <br><br> <b>Specification :</b> <br> <br>Features:<br> Frequency range: 824 ~ 849MHz 869 ~ 894MHz<br> Max Output Power: 22dBm <br> Max Gain: 62dB <br> I/O Port: N-Female on both ends<br> Main Power: AC 100~240V / DC 5V 2A<br><br> <b>Package Contents: </b><br><br> * Mobile phone signal amplifier <br> * Indoor Right Angle Antenna <br> * Outdoor Yagi Antenna With 32feet Cable <br> * Screws <br> * AC Adapter <br> * English User Manual <br> <b>Installation Guide: </b> <br> <br> 1.Check and find a place where your cell phone can receive the best signal outside your house?? usually on the roof?? or similiar