Why does Data Connection Optimizer not connect sometimes, even though I am near Wi-Fi?
There are a few reasons why the application might not connect automatically to a hotspot:
a) The hotspot is not known to the Data Connection Optimizer service. The service knows about millions of quality hotspots and will connect automatically to them, but there can be hotspots the service does not know about yet. In those instances where you are not automatically connected, you can always manually connect to the hotspot just like you would on an ordinary Android device (i.e. a device that’s not running Data Connection Optimizer ).
b) Data Connection Optimizer only connects to quality hotspots. If the hotspot is low quality (i.e. low speed, poor throughput, not connected, etc.) then the app will not connect to the hotspot.
c) The hotspot is protected with a password. Some hotspots, even though they are advertised as “public” may none-the-less require the user to get a password from the hotspot owner. Data Connection Optimizer does not connect to these kinds of hotspots.