VoLTE Explained: HD Voice over LTE Benefits & Setup

Go Beyond and Explore

What are the special hardware requirements for IoT devices to use VoLTE?

IoT devices must be equipped with specific hardware components to support VoLTE. These include a VoLTE-compatible LTE modem, IMS support, QoS capabilities, efficient power management, optimized antennas, high-quality audio hardware, compliance with network requirements, and robust security features. For instance, the Qualcomm Snapdragon X60 is a Modem-RF system that supports VoLTE and VoNR for advanced voice call features.

What are the security challenges faced in VoLTE?

VoLTE relies on IP-based communication, which can be vulnerable to interception if encryption and security protocols are not properly implemented. Potential security challenges include man-in-the-middle (MITM) attacks, signaling-based attacks like denial of service (DoS), eavesdropping, and spoofing. Ensuring robust security measures and encryption is essential to protect VoLTE communications.

Is VoLTE better than Vo5G?

VoLTE and Vo5G (VoNR) offer different benefits. VoNR (Voice over 5G) generally provides superior voice quality, lower latency, and a unified 5G network experience compared to VoLTE (Voice over LTE). However, VoLTE is more widely available at present as it utilizes existing 4G infrastructure. VoNR is becoming more prevalent as 5G Standalone (5G SA) networks expand.

What is VoLTE on a phone?

VoLTE on a phone allows you to make voice calls over your carrier’s 4G LTE network instead of falling back to 2G or 3G. When enabled, your handset uses the IP Multimedia Subsystem (IMS) to packetize your voice, delivering HD-quality audio and sub-second call setup—all while keeping your data session active in the background.

How do I activate VoLTE?

To activate VoLTE, first confirm with your operator that your plan and SIM support VoLTE. Then on most Android devices go to Settings → Network & Internet → Mobile Network → Advanced and toggle on VoLTE / Enhanced 4G Calling. iPhone users can enable it under Settings → Cellular → Cellular Data Options → Voice & Data → LTE. A restart may be required if the option doesn’t appear immediately.

What hardware requirements must IoT devices meet to support VoLTE?

IoT devices need a VoLTE-capable LTE modem with IMS support and QoS prioritization, efficient power management to handle continuous voice sessions, optimized antennas for 4G uplink/downlink, high-quality audio codecs and hardware, and robust security modules (e.g., IPsec or SRTP) to encrypt signaling and media streams.