Understanding LTE and VoLTE: How to Spot a VoLTE Phone

In recent years, the transition to LTE (Long-Term Evolution) has been a significant step in mobile technology. However, not all LTE phones support VoLTE (Voice over LTE). While LTE is primarily used for data services, VoLTE enables voice calls to be transmitted over the LTE network, providing a seamless and high-quality experience. Here’s how to identify if a phone supports VoLTE and what factors to consider.

How to Spot a VoLTE Phone

When purchasing a VoLTE compatible phone, it's crucial to ensure that the device supports this technology. Here are key points to check in the specifications and additional considerations to make:

Checking the Specifications

Network Compatibility: Look for lists of LTE bands the phone supports. VoLTE functionality often depends on the carrier's support for specific LTE bands. Software Version: Ensure the phone's software is up to date, as VoLTE may be enabled through software updates. Carrier Certification: Some phones are certified by carriers for VoLTE use. Check the carrier’s website to verify if the model is listed for VoLTE compatibility.

Model Reviews and User Feedback

Before making a purchase, read reviews and check user forums for the specific model. Many users share insights on whether VoLTE works with their carrier and any workarounds needed.

Carrier-Specific Considerations

The success of VoLTE can vary depending on the carrier. Here’s a breakdown of carrier-specific considerations:

UK Example: A Samsung phone bought from a Vodafone shop in the UK might support VoLTE on the Vodafone network. However, if you switch the SIM card to an O2 network, VoLTE might not work unless the device is not locked to a specific carrier. The Essential Phone PH-1 seems to be an exception as it works on any network that supports VoLTE.

Operator Flexibility: Some handsets like OnePlus phones can be configured to work on VoLTE if a setting is adjusted in a hidden menu. iPhones generally are less operator-specific, meaning they might work on multiple networks that support VoLTE.

Additional Considerations for VoLTE

It's also worth noting that not just the phone, but the SIM card itself needs to support VoLTE. Network operators can issue non-VoLTE SIMs, or disable VoLTE for certain SIMs. In such cases, contacting customer services to activate VoLTE services may be necessary.

WiFi Calling: The information mentioned in this article also applies to WiFi calling, which is an alternative method for making calls using the internet through a Wi-Fi connection.

By carefully considering these factors, you can ensure that your next phone purchase supports VoLTE, providing you with the best voice call experience.