My iPhone 5 with iOS 9.2.1 suddenly cannot connect to the internet, neither via cellular data or wifi. All applications that requires internet connection are unable to reach their server. I was in the middle of texting using WhatsApp when this happens, and this is my 2nd time experiencing this (the previous one I was able to get my connection back after restarting iPhone).
I can confirm I have an active internet connection on from my telecom provider and ISP. Tried restart/force restart/reset network connection but without success.