We live in a rural area in a recent (2yr old) home with radiant barrier and concrete board exterior.  We have always had to go outside to use our phones and even then it was spotty.  I install the exterior antenna on our TV antenna pole and we now get 4 bars in our home office.  The suprise was we get 3-4 bars all though the house, and even on our front porch the signal is improved.  Very happy wish we had installed it 2 years ago.  Nice to be able to use the phones in air conditioning.<a data-hook="product-link-linked" class="a-link-normal" href="/Wilson-Electronics-Desktop-Adjustable-Gain-Cell-Phone-Signal-Booster-for-Home-or-Office-For-Multiple-Users/dp/B0014KOB6Y/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Wilson Electronics Desktop Adjustable Gain Cell Phone Signal Booster for Home or Office  - For Multiple Users</a>