| | Re: I am new to BBM, BlackBerry AND smartphones, question re WiFi only and BBM on Z10
Some additional information:
The BlackBerry should use wifi instead of the mobile network when wifi is enabled. It doesn't sometimes, according to some users.
On pre-10 models, users who wanted to be sure any and all data went over wifi were advised to turn off mobile network. Disabling data and leaving mobile network on was not the solution for this concern because disabling data turned off ALL data, even wifi. Users who have wifi calling or UMA will still have voice when mobile network is disabled.
The OS 10 model allows mobile data to be disabled while leaving mobile network voice and wifi enabled. I don't personally know the magnitude of mobile network data use when there is a wifi connection, but if it is a concern the safest bet is to disable data in the mobile network settings.