GSM device offline

When a GSM device turns offline, please follow the instructions below to troubleshoot.

1.Check the signal strength of your carrier.

When the communication of your carrier network malfunctions, GSM device will turn offline until your carrier resumes the network. Additionally, please don’t place your GSM device in a place with weak signal or obstruction (inside metal box).

Try another place.

2.Make sure you have enough data

Check if the data plan for the SIM card is used up or has expired. Try a different SIM card which has enough data.

Hello! I’ve successfully connected the device from my mobile device. But the device always shows offline. My WIFI frequency is 2.4. The device and router are within a meter distance. The device is a blink in two second mode. My device model is Sonoff 4ch Rev2.

Please help

Hi there, thank you for your feedback. To best assist, please capture a brief video showing the blinking light behavior, then submit a support ticket via in-app “Help & Feedback”. Our support team will review the video and get back to you as soon as possible.