iPhone devices receive the update to iOS 11.2. In the information it is declared about Apple Pay Cash to send, request and receive, improvement of stability and bugs fixes. One of the first things you will surely notice is that you cannot turn off Wi-Fi completely anymore. Tap on the Wi-Fi toggle in the Control Center and you will see the notification “Disconnecting Nearby Wi-Fi Until Tomorrow“:
When you tap the toggle for the first time after you installed the update you will see “Disconnecting Nearby Wi-Fi Until Tomorrow. The current Wi-Fi network and others nearby will be disconnected until tomorrow. Wi-Fi will continue to be available for AirDrop, Personal Hotspot, and location accuracy.”
The same goes to for Bluetooth. The module stay available for Apple Watch, Apple Pencil, Personal Hotspot, and Handoff: What Does This Mean?
If you see Disconnecting Nearby Wi-Fi Until Tomorrow (or Disconnecting Bluetooth Devices Until Tomorrow ) means that your Wi-Fi (or Bluetooth respectively) module will be turned off until 5:00 next morning local time. Besides that, you should be aware that wireless modules will be turned on again sooner if you reboot your device or move to another timezone.