Degraded performance for large data transfers in the United States on Global-3 (G3) (ICCID Prefix 894642*)

We are investigating reports of degraded data performance affecting devices in the United States (AT&T, T-Mobile, and Verizon) on our Global-3 (G3) profile SIMs (ICCID prefix 894642*).

Affected devices are attaching normally and maintaining data sessions, but transfers involving larger payloads are seeing significantly reduced throughput and elevated failure rates. Sessions passing small amounts of data appear to be unaffected.

We have engaged our network partners and dedicated engineers are actively investigating. Devices outside the United States are not currently believed to be impacted.

The next update will be provided within 60 minutes, or sooner if we have new information.

We are continuing to investigate this issue and there is no new information at this time. We will provide the next update when new information is available.

We have identified the cause of the degraded data performance affecting a subset of devices in the United States. An MTU mismatch in the network path is causing packet loss for affected sessions, which presents as failed or unusually slow transfers, particularly for uploads. Devices may be affected intermittently, and devices on the same account or in the same location may behave differently.

This affects Global-3 devices in the United States across AT&T, T-Mobile, and Verizon. Sessions on other profiles and in other regions are not impacted.

We are working with our upstream network partner on remediation. We will provide the next update by 19:00 UTC.

We have identified the cause of the degraded data performance affecting a subset of devices in the United States. An MTU mismatch in the network path is causing packet loss for affected sessions, which presents as failed or unusually slow transfers, particularly for uploads. Devices may be affected intermittently, and devices on the same account or in the same location may behave differently.

This affects Global-3 devices in the United States across AT&T, T-Mobile, and Verizon. Sessions on other profiles and in other regions are not impacted.

We are working with our upstream network partner on remediation. We will provide the next update by 19:00 UTC.

No new information is available at this time as work continues to remediate this issue. We will provide another update within the next 2 hours, if not sooner.