US 2G/3G Sunset

The mobile operators used by Particle cellular devices in the United States are making changes to their networks that will affect some devices.

Operators

AT&T

• 2G/3G devices will no longer connect AT&T at this time.
• AT&T 2G has been shut down since 2016.
• AT&T 3G started shut down in February 2022 and this is substantially complete as of June 2022.

T-Mobile

• T-Mobile 2G shutdown complete as of August 3, 2026 (started on April 2, 2025).
• T-Mobile 3G shutdown started in January 2021 and is substantially complete as of June 2022.

Timeline

These devices do not have connectivity in the United States as of August 2026

Affected devices

Boron 2G/3G (BRN310)

• These devices can no longer connect in the United States
• The Boron 2G/3G only has ever connected to T-Mobile. It will likely revert to 2G only by October 2021, may stop working entirely in April 2024, and did stop working in August 2026.
• After the T-Mobile 3G shutdown in October 2021, there may be reduced T-Mobile coverage in some areas.
• T-Mobile 2G shutdown is complete as of August 2026. It was possible any time after April 2024.
• Of the nationwide US mobile carriers, this model is only compatible with T-Mobile and AT&T, and using a 3rd-party SIM card will not help. This device is not compatible with Verizon.

E-Series E310

• These devices can no longer connect in the United States
• The E-Series 2G/3G Global can connect to AT&T or T-Mobile.
• After February 2022 it will not be able to connect to AT&T and will only be able to use T-Mobile 2G.
• T-Mobile 2G shutdown is complete as of August 2026. It was possible any time after April 2024.

Electron 2G/3G (ELC314, E260)

• These devices can no longer connect in the United States
• The E-Series 2G/3G Global can connect to AT&T or T-Mobile.
• After February 2022 it will not be able to connect to AT&T and will only be able to use T-Mobile 2G.
• T-Mobile 2G shutdown is complete as of August 2026. It was possible any time after April 2024.
• Of the nationwide US mobile carriers, this model is only compatible with T-Mobile and AT&T, and using a 3rd-party SIM card will not help. This device is not compatible with Verizon.

Electron 2G (E350)

• These devices can no longer connect in the United States
• The Electron 2G has only connected to T-Mobile since 2016.
• T-Mobile 2G shutdown is complete as of August 2026. It was possible any time after April 2024.
• Of the nationwide US mobile carriers, this model is only compatible with T-Mobile and AT&T, and using a 3rd-party SIM card will not help. This device is not compatible with Verizon.

SKUs that cannot be used in the US

Because of the 2G/3G sunset, the following SKUs cannot be used in the United States.