Wi-Fi assistance is one of the functions introduced with iOS 9 on the iPhone that you need to know, know what it does and, if necessary, disable in order not to have bad surprises. The alarm launched after the update and which is talked about a lot in specialized forums concerns an alleged increase in the traffic consumption of the cellular data connection on the iPhone, caused by Wifi Assistance, which can be a not a small problem for those with consumer connections. more limited. To understand if this is true and if it is really to be disabled, let 's see what "Wifi Assistance" means, if it is a good thing or not.
To see the quality of the Wi-Fi signal, you can look at the indicator in the status bar where the signal for the use of the data connection will also appear.
The Wi-Fi assistance feature, activated by default on the iPhone, basically works in this way: if you are using the iPhone connected to the internet to a wifi network, perhaps at home or in a restaurant, to ensure a good connection even if the signal is low and almost absent, the iPhone automatically activates the data network so as not to lose the connection.
If you spend a lot of time in the office or at home, the wifi will have a sufficient signal to not activate the wifi assistance so there should be no problems.
However, if you have rooms in the house where the wifi takes little or nothing and you move from one to the other, those who have a limited data plan, could find a higher traffic consumption than before due to Wifi Assistance. The function certainly has good intentions and it is only because of the costs and the limited nature of the plans given in Italy if this can become a problem.
To understand if this is bad or good just check the reception status of the wifi at home and know if you want the iPhone to always be connected to the internet or if it is not essential. If you often connect to wifi networks with weak signal but not completely absent, it may be convenient to disable Wifi Assistance on iPhone.
To disable Wifi Assistance just go to Settings -> Mobile and scroll down to find the switch.
In this same section of settings it is also possible, without disabling Wifi Assistance, to limit the use of the data connection of individual applications. This could be the best compromise, leaving Wifi Assistance active and instead disabling some apps to use the mobile network.
For most people Wifi Assistance is a useful function, which allows you to keep the connection active at all times, especially when using wifi networks outside the home, so as not to go crazy with the reception of the signal.
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