The Samsara Vehicle Gateway (VG) uses cellular networks to transmit telematics data to the Samsara cloud. When a vehicle travels through an area with weak or no coverage, the VG and Samsara Driver App may temporarily lose their connection to the cloud. The VG continues to record data locally during this time and syncs when coverage is restored.
Fleet administrators can use carrier coverage maps to identify potential dead zones before planning routes or installing equipment, and to quickly determine whether a vehicle's connectivity issue is coverage-related rather than a hardware or configuration problem.
Coverage maps display predicted signal availability based on each carrier's network infrastructure. They are useful for:
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Identifying regions where vehicles are likely to experience intermittent or no connectivity
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Planning installations in areas with sufficient coverage for reliable data transmission
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Confirming whether a reported connectivity event aligns with a known low-coverage zone
Note
Coverage maps display predicted availability, not a guarantee of service. Terrain, buildings, and other factors can affect actual signal in ways the maps do not reflect.
Samsara Vehicle Gateways in the United States operate on the AT&T network.
Samsara Vehicle Gateways in EMEA regions operate on the Vodafone network.
Samsara Vehicle Gateways in Mexico operate on the AT&T Mexico network.
If a vehicle stops reporting or a driver's connectivity state changes unexpectedly, check the relevant coverage map before opening a support ticket. A vehicle traveling through a low-coverage zone will typically resume syncing once it re-enters coverage, with no action required.
For information on how the Samsara Driver App behaves during connectivity events, see Internet Connectivity States and Best Practices.
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