Attention: This product is in the 850MHz band, it only supports mobile phone cards in the 850MHz band. Support 2G 3G 4G calls. Internet access only supports 3G. This antenna is not available for Verizon 4G LTE networks Before purchase, please make sure your phone network's frequency is compatible with this signal booster. Return is NOT accepted if the signal booster is not effective for your phone network. Please feel free to contact us if you need help choosing signal boosters. NOTE:The outdoor signal has to have 3 bars at least, then the unit will work indoor.Otherwise this there is no signals indoor. Specification: Brand new Frequency Range: 824-849MHz (Up Link); 869-894MHz (Down Link) Maximum gain: 60db(Up Link); 65db(Down Link) Standard Output Power: 26dbm～29dbm(Up Link).
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