GPS Location Accuracy Advisory

Important information about your Mobile Device

We recently reached out to you regarding potential impacts to location accuracy during 9-1-1 calls on your device.

This is due to the GPS Week Number Rollover (WNRO) event, which began on April 6th, 2019. This is a global GPS issue and not restricted to the wireless industry or 9-1-1. The Week Number Rollover refers to the limitation of values in the GPS message format counter. After the counter reaches the 1024th week, it will reset to zero, which is what occurred on April 6th. Properly configured devices should not be affected. However, some devices will incorrectly handle the April 6, 2019 rollover. Because GPS Time is used for user location determination, an improperly configured device may result in improper location information associated with 9-1-1 calls.

In addition to location accuracy during 9-1-1 calls, device applications that depend on GPS location may also be impacted.

Most devices are properly configured. However, the following devices are known to Execulink Telecom to be affected. Certain devices have a software update available to correct the issue. If no update is available, you may contact us at 1-877-393-2854 to explore options.

The following list provides known impacts and possible resolution for known affected devices if they were purchased from Execulink. Please note that any mobile phones purchased before 2013 could be affected. If your phone is showing discrepancies with date and time you should reach out to the phone manufacturer to see if there are any updates forthcoming.

Device NameAction
Nokia 3Please make sure your device software is up to date.
Nokia 5Please make sure your device software is up to date.
Nokia 3310Please make sure your device software is up to date.
Nokia 1616Please make sure your device software is up to date.
Samsung Galaxy J1 MiniPlease make sure your device software is up to date.
Samsung Galaxy Y ProPlease make sure your device software is up to date.
Samsung Galaxy S5 MiniPlease make sure your device software is up to date.
Samsung GT-I9100 Galaxy SIIPlease make sure your device software is up to date.
Samsung Galaxy J3Please make sure your device software is up to date.
Samsung XCoverTake your device to nearest cell phone service center for maintenance.
Samsung C414Please make sure your device software is up to date.
Samsung Galaxy J2Please make sure your device software is up to date.
Samsung Galaxy SIIIPlease make sure your device software is up to date.

 

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