The previous post is about extending your WiFi around your house, but why do I need it?
In terms of a laptop or tablet, when your WiFi becomes weak of disappears, then your internet stops working and you soon know. However, just recently there have been some updates on mobiles phones which can catch you out!
1. Facebook has a setting which allows it to play videos while you are just scanning your timeline. This is OK in WiFi zones, but the setting default is to play these in both WiFi and 4G (or 3G) areas as well. After buying a new iPhone 6 the data usage went up dramatically, so much that it went over our limit and started charging additional sums.
So check your FACEBOOK SETTINGS (not phone settings) and make sure the video is set to WiFi only (also check after a software upgrade). It also happens on Android and Windows phone also I believe.
2. The new IOS upgrade for iPhone 6, has now a new setting called WiFi Assist. This is a feature that allows the 4G to kick in if your WiFi signal becomes too weak. For example, you may be streaming video in you house and then if you move to a weak WiFi area, then the streaming drops on to 4G without your knowledge and racks up a large data usage.
So check your iPhone settings (only on iPhone 6, not seen it on 5) for the WiFi Assist switch, it is right at the bottom of the 'MOBILE DATA' setting option in SETTINGS. See screen shot on left.