[mrthom]

Hello,
I have a Blackberry 8120 Pearl, OS 4.5, T-Mobile provider, no data plan.

When I choose Wi-Fi only and am connected to Wi-Fi, the phone can still send and receive calls. As I understand the settings the phone should NOT be connected to the T-Mobile Network. When I am out of Wi-Fi there is no phone connection.
Worked about two hours with a T-Mobile tech rep and could not prevent phone action. We wiped the phone clean and did a reinstall of the OS, and calling/receiving was verified.
SETTINGS:

Options>Mobile Network>
Data Services= ON
Connection Preference=Wi-Fi Only
Mobile Network=T-Mobile
Network Selection Mode=Automatic

Manage Connections>
Mobile Network=OFF
Wi-Fi=ON
Bluetooth=OFF

If anyone is knowledgeable of this and can advise how to turn off the phone connection would appreciate the info.
Thanks,

[MidnightDraven]

Although I was not aware of it; it appears your 8120 has UMA.
Connection preference ONLY appears on blackberries with UMA.
UMA allows calls via wi-fi...hence why your able to call.
If you change the connection preference to mobile network, and keep the mobile network OFF and wi-fi ON; you'll still be able to surf the net, receive emails etc, but it shouldn't initiate UMA calling.

Can I ask which country T-mobile you are on? UK, US etc?

[mrthom]

Ah magic.... Thanks for the answer. Yes, 8120 uses Edge and UMA. Neglected to indicate the UMA indicator when connected.

Am in the US.

If you do not mind and I am hijacking my own post, do you have any idea as to how I can find the host address for the Mapquest 4 Mobile phone application? Am using Aerize Wi-Fix to bypass the Google Maps and Mapquest requirement to have have a data plan.
I found the address for Google Maps but so far unsuccessful for Mapquest 4 Mobile.
Thanks

[MidnightDraven]

Unfortunately I don't.