When Iphone uses WEB authentication and after lock screen is re-unlocked, the condition of WIFI breaking and user off-line will appear. What causes this problem to occur?
When Iphone connects with WIFI of WEB authentication, it will send a WIFI connection detection request. After the wireless controller intercepts and captures the detection request, it will redirect to authentication page. And for this process, Iphone will take this WIFI as a regulated WIFI.
For Iphone, the authentication page will be popup automatically to authenticate WEB when user connects with WIFI. And after user locks the screen of Iphone, Iphone system will detect WIFI flow automatically. Because the screen has been locked without flow and Iphone takes this as a regulated WIFI, it will break the connection with WIFI automatically.
Consequently, the appearance of this problem doesn’t mean the fault of equipment operation. Actually, this problem will occur when all Iphone adopts web authentication method to surf the internet. And for mobile phone with Android system, this problem will not appear when adopting web authorization.
For remarks on regulating WIFI, refer to http://support.apple.com/zh-tw/HT3867.
ⅰ After Iphone connects with WIFI of WEB authentication, click WIFI setting to close automatic login. Then break WIFI to re-connect. And after Iphone connects with WIFI, it will not send WIFI connection detection request. And the authentication page will not popup automatically. At this time, the user should open browser to undertake authentication page jump when surfing the internet. For this process, Iphone will not take it as a regulated WIFI. And it will not break the connection with WIFI after the screen is locked.
ⅱ At the management background of Sundray controller, check “authentication page is not popup automatically when connecting with WIFI” in wireless network of WEB authentication. In this way, after Iphone connects with WIFI and sends WIFI connection detection request, the controller will let this request pass. And it will not redirect to the authentication page. The user should open browser to undertake authentication page jump when surfing the internet. In this way, Iphone will not take it as a regulated WIFI. And it will not break the connection with WIFI after the screen is locked.