The new iOS 9 beta showed us two new interesting features – firstly it allows your phone connectivity to switch to your data connection, when the Wi-Fi signal is low and secondly, it allows Wi-Fi calling for AT&T subscribers.
As of now, the iPhone can connect, or attempt to connect to a known Wi-Fi hotspot that is within range, even if the connection is too weak to transmit data. So, the solution to this problem has been to disable the iPhone’s Wi-Fi radio. However, with the the “Wi-Fi Assist” option in the iOS 9 beta, one can go to the “Cellular” menu in the Settings app, and enable the feature, it will then force your device to [...]