Outage in Zipwhip

SMS Delivery Delays to the US Cellular Network in the United States

Resolved Minor
December 19, 2025 - Started about 14 hours ago - Lasted about 3 hours
Official incident page

Incident Report

We are experiencing SMS Delivery Delays To Cellular Corp Network in United States of America. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

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Latest Updates ( sorted recent to last )
RESOLVED about 11 hours ago - at 12/19/2025 05:05PM

We are no longer experiencing SMS delivery delays when sending messages to the US Cellular Network in the United States. This incident has been resolved.

MONITORING about 13 hours ago - at 12/19/2025 03:01PM

We are observing recovery in SMS Delivery Delays to the US Cellular Network in the United States. We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

INVESTIGATING about 14 hours ago - at 12/19/2025 02:20PM

We are experiencing SMS Delivery Delays to the US Cellular Network in the United States. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

INVESTIGATING about 14 hours ago - at 12/19/2025 02:11PM

We are experiencing SMS Delivery Delays To Cellular Corp Network in United States of America. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

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