What Is VoLTE? How It Works, and Why It Matters?

VoLTE, or Voice Over Long Term Evolution, is the way your phone transmits your calls. While calling, you rely on the voice calls over a 4G LTE network. It lets you enjoy the faster and clear voice quality with the data connection.

VoLTE calling lets you connect instantly, even if you are streaming music or videos, without any delay. Today, in this article, I will guide you about VoLTE, how it works, and how it is different from traditional cellular networks.

If you are unsure whether your mobile phone supports VoLTE, I will assist you in verifying it. Let's get into the details and answer your queries.

The Evolution of Calling: From 2G and 3 G to VoLTE

Primarily, mobile calls relied on the CDMA network and 3G. The networks offered the voice and the data services separately with average quality. In such a case, you couldn’t browse the internet while calling.

Then the emergence of the 4G LTE network and VoLTE made it possible to talk and use data with a single cellular network. The transition improved the speed, which led to the emergence of the standard modern calling. 

How the VoLTE Work? The Technology Behind Clearer Calls

On voice over LTE, the data travels the same way as your texts, videos, and emails. The VoLTE turns your voice message into data packets, and LTE data channels are used for the data transmission. 

Here is how your VoLTE call works. 

• When your device is connected to the 4G LTE network, the voice and data are transfer through the IP-based system.
• This procedure ensures to provide a high-quality voice and an uninterrupted data connection.

Compared to the older networks, now calling relies on LTE and ensures to provide high-speed data and calling. Now your streaming will not pause to answer the call, and all of this is possible with voice over LTE. 

Why VoLTE Is Better: Real Benefits You Can Hear and Feel

Here are several benefits that everyday users can get with VoLTE. 

• Superior Voice Quality: Improved sound quality is the major benefit of the voice over LTE. It aims to reduce background noise. It transfers more data for calling compared to the 2G and 3 G networks.
• Enhanced Coverage and Connection: Voice over LTE ensures connecting to the call faster. It offers effective indoor coverage with frequencies far greater reach. 
• Allows making Video calls: VoLTE with higher bandwidth allows making video calls. It lets you join the conference and the group calls.
• Better Battery Performance: With the older networks, your mobile phone had to switch between both networks, which led to fast battery drainage. With VoLTE, you don’t need to switch back and forth, which saves your phone's battery.   
• No Fee Required: VoLTE doesn’t use data or charge an additional cost for working. 

VoLTE vs 3G, CDMA, and Traditional Calling

Here is how VoLTE is different from the traditional networks. 

Network Type

• 3G/CDMA Networks: Offers voice and data separately. 
• VoLTE (Voice over LTE): Offers unified LTE for voice & data

Voice Quality

• 3G/CDMA Networks: You can experience average voice quality. 
• VoLTE (Voice over LTE): You can experience an HD, crystal-clear voice. 

Battery Use

• 3G/CDMA Networks: Drains battery faster.
• VoLTE (Voice over LTE): Takes lower power. 

Internet During Call

• 3G/CDMA Networks: Internet during calling is not available. 
• VoLTE (Voice over LTE): Fully supports the internet during calling. 

Connection Time

• 3G/CDMA Networks: Your call with these networks takes 3 to 5 seconds to connect. 
• VoLTE (Voice over LTE): It takes 1 to 2 seconds to connect the call. 

Thus, VoLTE is an effective way of communication then the traditional networks. 

 How to Check and Enable VoLTE on Your Phone? 

Most of the phones in the market are now VoLTE-compatible. If you are unsure about whether your device supports voice over LTE, go through the following steps on your phone. 

For iPhone Devices

• Open the Settings app on your phone.
• Click to Cellular and select the Cellular Data option. 
• Here in the Voice & data section, ensure the VoLTE is detected. 

For Android Devices

• Open the Settings app.
• Move to the Mobile Network.
• Click the Preferred Network Type. 
• Here, Enable the VoLTE. 

 Troubleshooting: When VoLTE Isn’t Working?

It's frustrating for the users when VoLTE is not working. Here are several facts that lead to the dysfunction of voice over LTE and troubleshooting.

• No 4G/LTE coverage: If you are in an area of 3G coverage, LTE will not work. VoLTE works only with a 4G LTE network. Ensure to check the VoLTE icon in th status bar, if it's not there, move to the 4G LTE coverage area. 
• Service is not activated: If the mobile operator has not activated the VoLTE service, you can’t make a call or use data. To fix the issue, contact the carrier and confirm the VoLTE service is activated.
• Incompatible Device: If your device is not compatible with your carrier's specific VoLTE network, it will not work. You should upgrade your device to troubleshoot this issue. 

VoLTE and eSIM: The Perfect Pair for Modern Connectivity

Managing voice over LTE with eSIM technology has become easier. Now you can get a fast and reliable connection. 

eSIM card is a digital SIM embedded into devices and ensures to provide a fast cellular data connection. An eSIM card with VoLTE doesn’t require physical swapping. It offers remote QR code activation of voice and data services on 4G LTE networks.

You can enjoy seamless VoLTE calling with an eSIM card connection. For travelers, eSIM with VoLTE offers a flexible connection without any data roaming charges. If you are still relying on the local SIM cards, you should switch to eSIM technology to access a seamless connection. 

Note: Phonico is a reliable provider that offers eSIM data plans for travel to the USA. With an eSIM, you can enjoy unlimited talk and text services without any additional cost. To stay connected during your visit to the USA, Phonico can be your perfect companion.