My new Verizon fios modem/router is not as strong as my old router my daughter's phone doesn't always connect to my wifi network. Is there a simple, inexpensive extender people could recommend. I'm confused by one thing though and maybe someone can dumb this down for me. Would her iphone switch automatically to the signal the extender is putting out and would that be the same network with the same password? What if the signal is just weak, how does that work. She has an iphone se if that matters Thank you for any advice you have