Wi-Fi stopped connecting on apple products

At the beginning of August I able to two different Wi-Fi connections. About a week ago the extension connection stopped working on both my laptop and iphone. However the other connection still works and the broken one still works for other people on their PCs.

has anyone had this happen/can suggest where I should look to fix this?

Is the machine under warranty?

  • Why are apple products so expensive? It's all repetitive. There's no 'new innovative technology'. Apple just adds stuff they purposely did not add to the previous model just to get more sales. Just like the iPhone 4s. They could have easily gotten 4g LTE connection, but it does not and that is going to be one of the 'golden features' of the iPhone 5.
  • Asus laptop stopped connecting to the wireless router? We know it is not the router because the HP Notebook works and our iPhones work. When Windows runs a detection for errors it reports none. We have unplugged everything a few times, have hit FN F2 nothing. The only message we get is to call a friend who might know how to fix it!
  • IPhone 5s randomly stopped connecting to LTE on Verizon? Up until a couple days ago, my phone received LTE just fine, but one day I woke up and my phone only displayed the 3G icon. I know it's not my location because I've driven all over the city and I haven't gotten LTE anywhere. Is there something wrong with my phone?
  • Does apple replace broken apple products with refurbished ones? I just got a new iphone 4s from them today because my lock button jammed over the weekend. when he brought my new iphone over it came in a black box that was sealed and he had to take the sim card out of my old one and put it into my new one? i was wondering if the phone i have now is refurbished?