What are the differences between Xiaomi Offline Communication and calling with a regular SIM card?

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div:last-child { margin-right: 0 }Xiaomi Offline Communication is a feature that allows Xiaomi devices to communicate directly with each other without an internet connection, mobile data, or even Wi-Fi.
Xiaomi Offline Communication supports voice calls up to 1.9 km in open areas on the Xiaomi 15T Pro device and up to 1.3 km on the Xiaomi 15T device, and up to 1.5 km on the POCO F8 Pro and POCO F8 Ultra devices in unobstructed environments.
And here are the differences between the Xiaomi Offline Communication and the regular SIM card calling:
1. Core differences:
Normal SIM card calling: Relies on mobile network base stations and cellular network signal transmission, requiring mobile network coverage for calls.
Xiaomi Offline Communication: It uses Bluetooth and does not rely on mobile network base stations, enabling point-to-point voice calls even without cellular or Wi-Fi signals.
2. Applicable scenarios:
Normal SIM card calling: Suitable for all scenarios with mobile network coverage, ensuring stable calls as long as the network is within range.
Xiaomi Offline Communication: It is used only in special scenarios without network coverage, allowing you to stay connected even without a network connection.
3. Different Call Ranges
Normal SIM card calling: The range of normal SIM card calling depends on the mobile network coverage. In theory, calls can be made in areas with network coverage, with relatively small distance restrictions.
Xiaomi Offline Communication: The range is limited, but in complex urban environments or with obstructions, it is significantly reduced.
Note:
1. Xiaomi Offline Communication is available via OTA from September 24, 2025. The availability of the feature and the OTA release schedule may vary by country.
2. Xiaomi Offline Communication requires the device to have a SIM card, be logged into a Xiaomi account, and have Bluetooth enabled.
3. Xiaomi Offline Communication supports voice calls up to 1.9 km in open, unobstructed environments (the maximum communication distance supported by different models varies. Please refer to the local sales channels for details). Actual call quality may vary depending on environmental conditions. Please refer to your actual experience. This feature is not designed or intended for emergency or life-saving communications.