Does not escape traffic Apple WiFi Companion feature explained

We've reported before, in iOS 9, Apple's new "Wi-Fi Assistant" function, it can automatically switch in case of wireless signal is weak cellular data, to make users feel smoother Internet experience. Of course, enjoy the convenience, but also have to pay increased prices. Users complain about the features jumped out before too much traffic, but today Apple's official support site for "Assistant Wi-Fi" explains the functions, Assistant to the effect that the Wi-Fi only if the signal is weak, switch when the cellular network can also use the cellular network, which is part of the traffic and not as exaggerated as rumors.

Apple's official support site explains: "when a continuous Internet access with Wi-Fi signal very weak, only rely on the cellular network, this can lead to more traffic. But for most users, the traffic is almost negligible. "That is, the case of WiFi signal is weak means no WiFi and Internet access can use the cellular network, which itself is what Internet users must use the flow, not Wi-Fi Assistant has led to the increase in traffic.

Apple said so, but is this feature was limited accordingly, Wi-Fi Assistant in data roaming will not turn on, and should only be used for the foreground application and not to the background downloading. It is worth mentioning that Apple Mail, maps, Safari, Apple Music and other home applications and Apple-certified third-party application can make full use of this feature, some applications and unlicensed third-party audio/video applications can use this feature.

Of course, if the user wants to close the "Wi-Fi Assistant" function, just click in the iOS 9 system settings into the cellular network settings, pulled to the bottom and select close.