GPS dependent applications may be impacted and not work properly. Your device will still work and voice, text and data will not be affected. What happens if I don’t upgrade my device?įor the best experience it is always better to upgrade your device so you don’t experience any service degradation. GPS accuracy may impact the performance of navigation applications used on these devices.Īpparently many device manufacturers and cellular carriers will not issue firmware updates for these devices to resolve the GPS week rollover problem, either because the problem is baked into the hardware or because support for the device has ended. Verizon posted a technical bulletin stating devices manufactured between 20 are affected, saying: And apparently some mobile devices were not designed with this in mind. However, fast forward another 20 years, and the second rollover happened on 23:59:42 UTC on April 6, 2019.īecause GPS receivers use GPS signals broadcast from satellites to determine the time, and the GPS signal carries the GPS week value as part of this payload, GPS receivers need to be programmed to handle the GPS week rollover event. The first GPS week rollover happened in August 1999, before smart phones existed. This is known as the “GPS week number rollover” problem. Because the maximum value of a 10-bit number in binary is 1111111111, or 1024 in base-10, every 1024 weeks (or 19.7 years) this number resets, or “rolls over,” to 0000000000 and starts counting up again. Global Positioning System (GPS) uses a 10-bit code to represent the number of weeks since January 5, 1980. However, an event in mid 2019 caught some users of older Android devices by surprise when their Global Positioning System (GPS) technology suddenly stopped working. Most hardware on Android devices remains perfectly usable for a number of years. Devices also get passed down and re-sold from one user to another. stopped subsidizing device costs, users are keeping their Android devices longer than before. As the cost of new flagship devices has creeped over $1000 and cellular carriers in the U.S. How to detect GPS week rollover problems on AndroidĪndroid devices have longer lifespans than they used to.
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