Connection isn't working on my iPhone 5s?

I have two iPhones one is a 5s on Tmobile and one is a 5c on Verizon but the 5c doesn't have service anymore. It says Verizon in the corner but I had it disconnected. Well both my phones are connected to Wi-Fi and the 5c is working perfectly. Everything loads fast and efficiently. But the 5s won't even load. Like in kik, it just says connecting until the timer runs out. Am I doing something wrong?

I bet that if you were to change the sim cards, the 5c would then work, but the 5s wouldn't. If not, the 5c must be locked to the Verizon network and it must be unlocked to work with any other network.

  • Why isn't Wi-Fi working on my iPhone? 3G works (that's what I'm using now) but Safari or anything else that uses internet won't load when I use Wi-Fi. Why won't it work?
  • Why isn't my network connection working? I try to look for a sharing connection on my laptop but nothing shows. The whole house has Wi-Fi, my Xbox and phone find the network but nothing shows on my laptop. Why? I get 2 bars of Wi-Fi on my iPhone and 3 bars of Wi-Fi on my Xbox and nothing on my laptop not even a network. Please and thank you.
  • Why is my Wi-Fi connection not working right? I have been experiencing problems with my internet. About a week or two ago my internet started acting funny and then started being normal for a week, then yesterday started acting weird again. The problem is it won't connect my laptop but all the other laptops can connect, iPods and iPhones have connection but it flashes on and off, same with the 3ds, and it kicks you off xbox live. My service is optimum and the tv and phone works just not the internet Wi-Fi.
  • Why internet connection not working? Ok so if my Wi-Fi is working on my laptop and my xbox live, why isn't it working on my iphone 5. Well it works, but internet is slow. But when I restart my iphone, it works for only like 5 minutes then its slow again. This mostly happens in my facebook and instagram. Now, there's no network connection mentioned in my instagram when I was logging in. Username and password is correct but there's no connection. I don't understand.