I have a Samsung Galaxy S4 I purchased it a few months ago and haven't ever had issues with it until recently, I noticed that my bars went from full down to only one bar and when I go out into my garage I have no signal or connection at all, I have tried taking the battery out and letting it sit for a minute and going through the network settings and choosing different connections to see if it changed and that didn't work either, I do have the one bar so I bought a network extender and it isn't working either, I don't know if there are any other resets or ways to get more bars and better service and how I can get my network extender to work
I have the worst luck with phones and technology 
