iPhone network problems URGENT
My iPhone 5s is connected to wifi but i cannot access Whatsapp or Internet or any app that requires network. My wifi is working perfectly fine as my other devices are connected.
Have tried using cellular instead of wifi, resetting all settings, restarting and powering off the iPhone, on & off airplane mode but it still cannot work.
I considered erasing all my my content and settings but i also cannot do so without network.
Are there any suggestions?
Thank you
iPhone 5s, iOS 9.2.1, null