What are the Disadvantages of VoLTE Calls?
Today, we’ll dive into the potential disadvantages of VoLTE (Voice over LTE) calls. As we’ve learned in previous discussions, VoLTE enables high-quality voice calls over LTE networks, providing better audio clarity and faster call setup times compared to traditional voice technologies. However, like any technology, VoLTE also has its downsides. Let me explain some of these key disadvantages so you can better understand the limitations of VoLTE.
1. Dependence on LTE Network Coverage
One of the main disadvantages of VoLTE is its dependency on a stable LTE network. Unlike older technologies like 2G or 3G, which have broader coverage in rural and remote areas, VoLTE requires an LTE signal to function. If you’re in an area with poor LTE coverage or no LTE coverage at all, VoLTE calls will not work, and your call will either drop or fall back to 3G or 2G networks if supported. In such situations, you may experience a loss in call quality or call failures.
2. Battery Drain
VoLTE uses your device’s LTE radio to transmit both data and voice, which can lead to higher power consumption compared to traditional voice calls that use 2G or 3G radios. This means that if you’re using VoLTE for extended periods, your battery may drain faster. The higher energy demand, especially during long calls or while roaming, can be noticeable, especially if your phone is not equipped with a high-capacity battery.
3. Device and Network Compatibility
Another disadvantage is that VoLTE requires both device and network compatibility. Not all smartphones support VoLTE, and some older devices may not have the required hardware or software to make VoLTE calls. Additionally, VoLTE services may not be available on all networks worldwide, especially in regions where LTE infrastructure is still being developed. This creates challenges when trying to ensure that VoLTE calls work seamlessly across different devices and networks.
4. Data Usage During Calls
Unlike traditional voice calls, which don’t consume your data plan, VoLTE calls use your data connection. Although the amount of data used during a VoLTE call is relatively small, it still counts toward your data usage. If you have a limited data plan, this could potentially lead to exceeding your data limits, especially if you’re on long calls or if there are network issues causing poor call quality and prolonged connection times.
5. Quality Issues in Poor LTE Networks
While VoLTE is known for delivering superior call quality, its performance heavily relies on the quality of the underlying LTE network. In areas with weak or congested LTE signals, you may experience call dropouts, delays, or reduced audio clarity. This can make VoLTE calls less reliable in such areas, and users may prefer falling back to 3G or 2G for a more stable call experience.
6. Impact on Roaming
VoLTE calls can also face challenges when roaming. In some cases, you may not be able to make VoLTE calls while roaming internationally if the roaming network does not support VoLTE services. This could result in a fallback to older technologies such as 2G or 3G, leading to lower call quality and longer call setup times. Additionally, some networks may charge additional fees for data usage during VoLTE calls while roaming.
7. Network Overload in High Traffic Areas
In high-density areas, where the number of users on the network is very large, VoLTE calls might suffer from congestion. As more users access the network for both data and voice calls, the available bandwidth may become limited, which could cause delays, packet loss, or lower call quality. This problem can become particularly noticeable during peak hours in urban areas, leading to a degradation of the VoLTE call experience.
As we’ve seen, while VoLTE brings many advantages in terms of call quality and network efficiency, it’s important to be aware of its potential downsides. These factors should be considered when deciding to use VoLTE, especially in areas with limited LTE coverage or if you’re relying on your mobile phone for voice calls in network-heavy environments.