The quote:

“Bell strategy With this network change, Bell aims at improving the efficiency and at reducing network costs by restricting unauthorized clients from accessing the user plane platform.

Client positioning • Clients should be using GPS Nav from Bell Mobility to receive more accurate locates as this service is intended to pinpoint your geographic location for navigation purposes
• High quality locates are only available by using GPS Nav – this is a turn by turn navigation software which utilizes the Bell Mobility network to provide highly accurate GPS location information in seconds.”