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Report Summary

35YOF CX reported after phone carrier made changes to restore service to her smart watch, it overheated, reoccurring. Watch overheated and locked & had to be placed in freezer to cool, a burn hazard. Issue was Mfr’s safety defect triggered by carrier’s network instability.

Product Details

Product Description: Samsung Galaxy Watch6 LTE (44mm), graphite color, smartwatch designed for health tracking, emergency calling, and cellular connectivity. Used on Google Fi/T-Mobile network. Device repeatedly overheats during normal use, creating burn risk to wearer and causing loss of emergency and alert functionality.
Manufacturer/Importer/Private Labeler Name: SAMSUNG ELECTRONICS AMERICA, INC. (SEA)
Brand Name: Samsung
Model Name or Number: SM-R935U
Serial Number: RFAX12EL6TR
UPC Code:
SKU#:
Date Manufactured: 1/26/2024
Retailer: T-Mobile retail
Retailer State:
Purchase Date: 6/17/2024
Product Category: Clothing and Accessories
Product Type: Jewelry & Watches
Product Code: Watches (1622)

Associated Recall

Incident Details

Incident Description: On August 14, 2025, after T-Mobile/Google Fi made backend changes to partially restore cellular service to my Samsung Galaxy Watch6 LTE, the watch began to overheat severely during normal use. Since then, the watch has repeatedly entered thermal runaway, where it continues heating and does not cool on its own. In one event, the device locked into airplane mode only and could not recover until I physically placed it in a freezer to end the thermal event. This presents a serious burn risk to the wearer, since it is worn on the wrist. These overheating cycles are tied to network instability and have disabled critical functions such as emergency calling, AMBER/WEA alerts, and safety/health monitoring features. Logs suggest that when the watch displayed emergency calls only, emergency calls may not have actually gone through. I have related evidence under active investigations with the FCC and Kansas Attorney General: [REDACTED] The evidence shows this is not just a carrier issue, but a Samsung device safety defect triggered by network instability. The device becomes dangerously hot and unsafe for consumer use.
Incident Date: 8/14/2025
Incident Location: Home/Apartment/Condominium

Victims Involved

Injury Information: Incident, No Injury
My Relationship to the Victim: My Spouse
Sex: Female
Victim's Age When Incident Occurred: 35 years

Comments from the Manufacturer/Private Labeler

Additional Details

Submitter has product?: Yes
Product was damaged before incident?: No
Product was modified before incident?:
If yes to any, explanation: The devices were not modified or physically damaged prior to the overheating issue. The overheating only began after T-Mobile and Google Fi made undocumented backend changes to restore partial service on August 14, 2025. Device logs show instability
Have you contacted the manufacturer?: No
If Not, Do you plan to?:

Report Number: 20250816-F7181-2147328623
Report Date: 8/16/2025
Sent to Manufacturer/Importer/Private Labeler: 8/20/2025
Report First Publication Date: 9/4/2025
Category of Submitter: Consumer