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American Focus > Blog > Tech and Science > I used the Xiaomi 15T as a walkie-talkie – here’s why it’s a game-changer
Tech and Science

I used the Xiaomi 15T as a walkie-talkie – here’s why it’s a game-changer

Last updated: September 24, 2025 3:34 pm
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I used the Xiaomi 15T as a walkie-talkie – here’s why it’s a game-changer
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In today’s hyper-connected world, our smartphones play an essential role in our daily lives, becoming lifelines in critical situations. It’s particularly alarming to find yourself in a situation where you have no phone signal—perhaps at a crowded festival where networks are jammed or in the great outdoors while trying to locate your campsite.

Fortunately, Xiaomi has unveiled a groundbreaking solution. Their latest premium mid-range devices, the 15T and 15T Pro, come equipped with a feature designed to alleviate signal-related issues.

This innovative functionality, dubbed Astral Communication, may sound like a buzzword, but it enables you to make phone calls even in the absence of cellular coverage. I had the opportunity to test this feature prior to its official launch, and the results were quite impressive.

Understanding How Xiaomi Astral Communication Works

Astral Communication is being introduced with the Xiaomi 15T series and is currently exclusive to these models. However, there’s great potential for this feature to be incorporated into other Xiaomi smartphones in the future.

To utilize this feature, both phones must have an active SIM card and be linked to a Xiaomi account. Users will then need to activate offline communication in the phone settings.

Xiaomi 15T Pro review

Luke Baker

Once activated, you can opt to allow calls exclusively between contacts or to everyone within the local area. A list of nearby devices will appear, similar to what you’d see when syncing Bluetooth equipment.

Essentially, Astral Communication operates using Bluetooth technology instead of cellular networks.

Xiaomi claims the 15T Pro has a communication range of up to 1.9km

At first glance, you might assume that Bluetooth would result in limited range, but Xiaomi counters this expectation with impressive numbers. The 15T Pro offers a maximum range of approximately 1.9km, while the 15T provides a range of 1.3km. While it doesn’t match the extensive reach of cellular service, it significantly surpasses the standard range of conventional Bluetooth headsets.

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My Experience with Xiaomi Astral Communication

Having had the chance to test both the Xiaomi 15T and 15T Pro, I immediately wanted to explore this new feature. I gave one device to my girlfriend and made a call using the offline communication mode.

The call experience mirrored that of a traditional phone call, minus the dependence on a network. The audio quality also seemed comparable, which was reassuring.

Xiaomi 15T review

Luke Baker

I ventured outside and walked down the street, and the connection remained stable. Xiaomi notes that performance is optimal in open spaces with a clear line of sight, and I found that encountering a few walls didn’t cause major disruptions.

Indeed, by minimizing physical obstructions, I could maintain a reliable connection over a considerable distance.

Optimally, you’ll achieve the best results in an open area with a direct line of sight, though minor barriers didn’t drastically impact the connection

However, I also noticed that the connection deteriorated with increased obstruction. When moving to a location that placed multiple buildings between us, the reception became unreliable. While I maintained connection throughout, some words were lost, reminiscent of fading cellular signals.

Final Thoughts on Xiaomi Astral Communication

The primary limitation of the Astral Communication feature lies in its current availability. As it stands, the capability is limited to the 15T series devices, making it less appealing unless you know others with compatible phones.

Nonetheless, it’s important to embrace innovation, and Xiaomi appears poised to expand this feature to more devices. Once accessible on a broader range of smartphones, it has the potential to become indispensable for outdoor enthusiasts involved in activities like hiking, skiing, or camping.

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While alternatives such as walkie-talkies exist, they often come with added weight and bulk. Utilizing a smartphone eliminates that concern while providing a seamless communication experience.

Xiaomi’s ambition seems promising, and it will be fascinating to see how Astral Communication evolves. This could represent a significant step forward in ensuring connectivity in remote locations.

TAGGED:15TGamechangerHereswalkietalkieXiaomi
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