We’re excited to announce that VoLTE (Voice over LTE) is now supported on the dT Mobile network—and automatically enabled for all Direct Telecom mobile customers.
This upgrade delivers clearer voice quality, faster call setup, and better performance in areas with limited mobile coverage—especially when used in combination with Wi-Fi Calling. Here’s everything you need to know about VoLTE and how it can transform your calling experience with your Direct Telecom Spanish mobile number.
What is VoLTE?
VoLTE stands for Voice over Long-Term Evolution, and it allows voice calls to be made over the 4G LTE data network instead of traditional 2G or 3G voice channels. With VoLTE, your device doesn’t have to switch networks to make or receive calls, resulting in a much faster, higher-quality experience.
In essence, it turns your regular voice calls into high-quality digital voice transmissions over your data connection.
How Does VoLTE Work?
Traditional mobile calls are made through circuit-switched networks (like 2G or 3G), which are limited in terms of quality and speed. VoLTE replaces that with a packet-switched network, transmitting voice as data over LTE—just like browsing or streaming.
This is made possible through something called IMS (IP Multimedia Subsystem), a framework that handles voice, video, and messaging services over IP.
Key Benefits of VoLTE for dT Mobile Users
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Crystal-Clear HD Voice Quality
VoLTE supports advanced audio codecs (such as AMR-WB), providing much clearer and more natural sound compared to traditional voice calls.
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Faster Call Connection
Calls connect in 1–2 seconds, much quicker than older technologies which can take 5–10 seconds to establish a connection.
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Voice and Data at the Same Time
You can continue browsing, using maps, or sending messages during a call—without any interruption to your data connection.
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Improved Battery Efficiency
Since your phone doesn’t have to switch between 4G and older networks, it consumes less energy, helping extend your battery life.
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Better Coverage Indoors & in Remote Areas
Combined with Wi-Fi Calling, VoLTE ensures stable, high-quality calls even when LTE signal is weak—such as inside buildings or in rural areas.
Automatically Enabled for All dT Mobile Users
VoLTE is now automatically enabled for all dT Mobile customers. There’s nothing you need to do—as long as your phone supports VoLTE, it will work out of the box.
If you’re unsure whether your device is compatible, check your mobile network settings for a “VoLTE” or “4G Calling” or “WIFI Calling” option, or refer to your device manufacturer’s website.
In many newer phones, VoLTE is enabled by default. For the best experience, we recommend keeping your software up to date and enabling Wi-Fi Calling if you’re often in areas with weak mobile coverage.
Better Calls Even When Signal is Weak
One of the most exciting aspects of VoLTE is how it works seamlessly with Wi-Fi Calling. If you’re in a location with poor mobile tower reception—such as a basement, rural property, or heavily insulated building—your phone can route the call over Wi-Fi instead.
That means fewer dropped calls, better voice clarity, and a much more reliable connection, even in places where a traditional mobile signal would struggle.