My iphone 6S (HK version) can not connect to internet suddenly at morning today(1Jun). It's ok yesterday. There is >600MB data package left for my package data. There is a sign 4G (or 3G) in top left, but internet is not available. Calling and SMS are both OK. I restart the phone, reset network setting, nothing changed, internet still not available. How to solve the problem? What's wrong with the internet of Swisscom?