Internet keep disconnecting on iphone?

I just recently got my internet connection fixed and my friend put a passward on the Wi-Fi router. And i'm using iphone 4s and i never had this problem before and the problem is my internet keep disconnecting every after 15 mins and i've to turn the Wi-Fi off and on from my iphone again and it starts working again, i reset my my network on iphone alot of times. Is it my internet or there'z a prob with my iphone?

I guess you need to upgrade, or go to a phone company

  • Why is my internet keep disconnecting? When ever I connect my iPhone 5s to my Laptop (Windows 7) the internet just disconnects for some reason. It only disconnects the laptops Wi-Fi
  • Why does my Wi-Fi keep disconnecting? All of a sudden one day my Wi-Fi was on 1 bar and this has never happened. I have an iPod Touch. I have a home router yet its being so stupid. It worked perfectly on my bff's iPhone and it had 3 bars but for mine, the Wi-Fi name won't even pop up unless I get really really close to the router!
  • Why Does my Wi-Fi Keep Disconnecting? - 1 So ill be on my iphone you no doin wat i'm doin then all of a sudden the Wi-Fi just straight up stops so then i got to go to settings and reset the Wi-Fi and after that its good but like its annoying cuz it happens like 3 times a day. Any way i can stop it.
  • Why does my Wi-Fi extender keep disconnecting my internet? I recently bought a TP-LINK TL-WA850RE 300Mbps Universal Wi-Fi Range Extender to extend my Wi-Fi to the Wi-Fi "dead zones" of my house for better connection. All was working well until all my computers kept saying "unidentified network no internet access", and my xbox wouldn't connect either, but my iphone and ipad connect to the internet fine. The problem ends when i unplug my extender, but i don't know why the extender isn't working.