To improve the connectivity of Apple devices, the firm came up with an idea: why not use the 3G/4G network to "boost" the connection when the Wi-Fi network is a little on the slow side? Improved speed = satisfied customer is what the engineers probably thought. But they overlooked one detail: not all iPhone users have a subscription that offers them an unlimited volume of data. In Belgium, no operator actually offers such a type of subscription and this feature is therefore likely to lead to skyrocketing bills for those who don't have the fortune of having highly performing Wi-Fi at home.
To make matters worse, this feature is activated by default in iOS9 and operates unnoticed in the background. When this feature is activated, you don't know whether you're surfing in Wi-Fi mode, in 4G or a combination of the two. If you have just downloaded iOS9, we can only recommend that you use this feature in moderation and regularly check the data volume used.
If you're a Proximus customer, you’ll receive an alert by SMS when you’ve used up half of the volume included in your subscription, another when you’ve used up 80% and a third when you’ve used up 100%. Moreover, your mobile data will be automatically cut once you exceed €60 worth of additional data beyond what is included in your subscription. This is in order to avoid any unpleasant surprises at the end of the month!