Bests & Worsts Reviews from Amazon

This thing works GREAT!!!! I went from 0 service to 4 out of 5 bars of service with this thing. However, there are two things you need to know to get that kind of performance, so I will tell you those two things, and then post a how-to for how I set mine up. 1) You have to research which bands the booster will boost and compare them to which bands your cell phone provider (and your specific cell phone) uses. WeBoost (and others) sell different boosters for different bands and carriers. It would seem obvious - but if this booster does not boost the band(s) you need, then you will get no boost (which is the main complaint the negative reviewers post). 2) The antenna is DIRECTIONAL, which means you need to point it in the direction of the tower(s) you are going to be using. If you don't, it can drastically affect how well it works (or doesn't). How-To (or How-I-Did): Before I ordered: I used a free phone app for Android called "Network Cell Info Lite" (there are others that do the same thing), which would tell me 1) what bands my phone was using, and 2) what direction the towers were from my current location. With the app installed on my phone, I climbed up on a ladder until I finally got a signal (I got 0 signal on the ground, so climbing the ladder was a necessity). About 15 feet off the ground, I got about -110dbm of signal, and found that the phone would alternate between band 5 and band 13. I checked, and this booster does both of them, so I ordered it. I also checked, and it showed me the location of the towers, both of which were in the same direction, north and east of my location. When the WeBoost arrived (along with a $18 Wilson mast I bought to mount it to the side of my barn), I unpacked the unit and read the directions. I mounted the antenna on the side of the barn about 18 feet off the ground, and pointed the antenna roughly in the direction of where I knew the towers were from my pre-order checklist. Then I ran the cables, and setup the booster and the inside antenna as explained in the directions. I turned everything on, and was disappointed to find I got 0 signal boost. I pulled out the app again, and checked the location of the towers, and realized I had the antenna pointed about 20 degrees the wrong way. When I looked close, I also saw I had it probably 15 degrees out of line on the horizontal axis as well. That's what I get for 'eyeballing it'. Back up the ladder with the phone in hand, and this time I got it lined up within about 1-2 degrees of 'perfect' (at least according to where the phone said the towers are). OH SNAP, THAT WORKED!!!! The light on the booster unit went from red to green, and I found I suddenly had 4 out of 5 bars of 4G signal when standing in the exact same spot(s) where I previously had 0 signal at all (no 3g, no 4g, not even 1x). Phone worked fantastic, download speeds were great, etc. This specific unit has a higher level of boost (covers more area) than most, and I find that my phone works anywhere within about 100 feet of the inside antenna that re-transmits the boosted signal. So in summary - the antenna is pretty directional, so you need to get it lined up on the tower you want it to boost from pretty well, and you need to have a unit that boosts the band(s) your phone/provider uses. If you can do those two things, this thing works GREAT. If you can't do those two things, you may have a less than happy experience with this thing (and probably any booster, as they all work on the same principles). Hope this helps.