• Extends the transmit and receive signals of mobile phone antenna
• Easy stick-on installation - No drilling required, no tuning, and nothing to hook up
• Passive-repeater circuit board reduce signal loss, cutoff, fade and static
• Picks up signals from your phone and transmits them outside, pulls in signals from outside for sharp reception.
• Improves reception/transmission when using your phone inside any vehicle! Passive Repeater Glass Mounted Antennas for use with all portable Cellphones operating on the specified frequency range.

Non Powered, Non Wired "repeater" antennas. For use with all portable and transportable cellular telephones. It is for every phone to boost cellular signal Mount on car window glass. UT-903 6 dBi Glass Mounted Antenna for Car, RV, Mobile Home.

Just bought one for a friend who lives in basement that has no cell signal. Have doubt on it initially thinking a $10 product can solve the big problem. But it is only $10, why not give it a try.

The product is easy to setup. There is a small window in the basement that is just in the level of ground. Stick the two piece on each side of window. Few minutes later, got signal.

It is not perfect. It only works in few feet around that window and has to stand up to make a call. It is still a huge improvement that able to make/receive phone call from part of the room.

In conclusion: This product works in a small area that has cell signal blocked.

This antenna did not make any improvement in the cellular signal when I mounted it on my vehicle.

I didnt get any improvement although i used it in the house for boost mobile unlimited there wasnt a signal gain.

Mobile service providers claim that this type of antenna does not work, and I have to agree with them. Installing it actually reduced my reception from 2 bars to NO bars! If you search the internet, you will find that passive antennas like this are no different than that battery compartment sticker that claimed to improve cell phone reception, block radio waves from frying your brain, etc. It doesn't work and it's a waste of money.

I recommend buying a wired antenna that directly connects to your phone. If you phone doesn't have such a connection, then you may want to look into a different phone because nothing without a direct connection is going to work, and you may want to look into a phone that gets better reception (there are some -- just read the 3rd party reviews).

I wouldn't recommend this product to anyone unless you just have money to burn. If so, please just send it to my PayPal account instead.

Bought this because of no service in room that had low service by the window. I tried using this by the window to help boost the signal but it doesn't improve the signal at all. Waste of money.