Telenav for T-Mobile Supported Devices: v5.8 for BlackBerry smartphones - Manual (Page 65)

Click the Submit button to send us your feedback.
You can also give Feedback from any page in TeleNav by holding down
the “F” key for two seconds, or by clicking Menu >> Give Feedback in
Drive To, Search, and Maps & Traffic screens. You can speak in your
feedback or type it in.
Occasionally, you may also be asked to provide feedback after a
navigation session is finished. To opt out of future feedback surveys,
simply check the box, “Do not ask me for feedback after trips.”
Cancel Subscription
You can cancel the Sprint Navigation service directly from your device.
You will be asked to indicate your reason for cancellation.
Diagnostic Tools
These Diagnostic Tools can help you troubleshoot your device, in the
event that you may need to contact Customer Support. You may be
asked to provide some of the information that you find on this screen.
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