IMPORTANT NOTE: This is a passive antenna, It can work alone. It must work together other active network device signal booster/repeater/router/access point, etc. Different Tele Company adopt their own standard of signal frequency. Please find the correct frequency you are using to match this antenna. Covers failures due to power surge other mechanical electrical breakdowns.Easy claims process online 24/7. If you receive an item and it doesn't work properly or you don't like it because of any reason at all. The item "4G LTE 3G High Power Omni-Directional Building Mount Antenna 806-2700MHz N For" is in sale since Monday, February 4, 2019. This item is in the category "Cell Phones & Accessories\Cell Phone Accessories\Signal Boosters". The seller is "platinum_wat" and is located in Cookeville, Tennessee. This item can be shipped worldwide.