Hi All - I searched the forum and couldn't find anything on this topic - my apologies if I missed something. I just got a Galaxy S4 (switched from iPhone). The signal strengh is very weak in my house - mostly because my downstairs is underground. I puchased a Samsung Wireless Signal Booster (runs calls through my internet? not a techie - but think that's right). It worked great with my iPhone - but doesn't seem to do much for my new Galaxy - I tried resetting the wireless booster - and I also downloaded a signal booster app on the phone - still seems to only show 1-2 bars - with spikes to full bars sporadically - then back to 1-2 bars. Any suggestions? Thanks!