Amazboost 5G 4G LTE 3G Cell Phone Signal Booster for Home - FCC Approved, Covers 5,000 SQ FT, Works with Verizon, AT&T, T-Mobile, Sprint & All Major US Carriers - Perfect for Rural Homes, Offices & Basements with Weak Signal

I was very impressed. Went from -119 dBM (before booster) to -85 all the way up to -80 dBm at times (after booster). This was for a tiny (800 sq ft) 2-story rustic cabin with solar. Got terrible cell phone reception and could not use phone hotspot to provide internet for my computer.First some info: I used "Network Cell Info Lite" app to measure reception in dBm. Here is some info on dBm, which are all in negative numbers, btw.-50 dBm and Higher: Outstanding Signal-50 dBm to -65 dBm: Very Good Signal-65 dBm to -80 dBm: Good Signal-80 dBm to -100 dBm: Weak Signal-100 dBm to -120 dBm: Very Weak SignalPrior to using this booster, I was getting -119 dBM on my phone INSIDE the cabin, and around 114 dBm standing on THE ROOF of the cabin. I ONLY could get ANY cell service on upper floor of cabin, none on ground level. Pretty bad.The product instructions literally said that if you don't get at least -110 dBM outdoors, this product won't work for you. We had less than that threshold, but the product worked anyway. Cabin is surrounded by tall Oak/Maple. Height of cabin: 20 feet, height of pole with outdoor antenna: 33 ft, height of nearby surrounding trees: 70 - 80 feet? Used a tall metal pole to mount the antenna, which we also bought on Amazon. Also see attached diagram.This product is the Amazboost A2 in the Amazboost store, but on its product page, it is called "Amazboost Cell Phone Signal Booster for Home, Supports 5,000 SQ FT Area...." Definitely made in China and it has those grammatically-incorrect instructions that we have all come to know and expect of products from China.Before the booster, it was a struggle to send a text, and phone calls would break up. After the booster, phone calls and texts (even those sending pictures) are a breeze. i can now connect my computer to phone hotspot and speed test on computer gives 20 mb download speeds. Internet speed test on my phone gives between 33 and 50 download (was 4-13 prior to booster). And best of all, the downstairs of the cabin also gets cell reception now. I was able to connect a tablet downstairs to my phone hotspot and stream The Office. Before, there was NO RECEPTION whatsoever downstairs, now I can stream video.I was very close to buying a different $500 booster, because I thought this one was likely junky, but it's not. It is very good, i think. I totally recommend it.