I had the previous version made by Wilson for 4G Verizon. That one works well indoors. Not the best boosting, but enough to hold a 3G or 4G a a bar or so.  So I had high expectations for this one which was twice the cost of the previous version when I bought that one.  But this one did little, to no, to even slightly worse signal "boosting".  Sadly.  If it had increased signal strength by a few bars I would have given it 5 stars. But it basically showed no improvement from the previous booster.