Can a Jio User Use VoLTE to Call 2G/3G Phones?

Yes, a Jio user using a VoLTE-enabled mobile phone can call a 2G or 3G only enabled mobile phone. Here's how it works:

Voice over LTE (VoLTE)

Jio primarily operates on a 4G LTE network and uses VoLTE for voice calls. This allows users to make high-quality calls over the LTE network. VoLTE stands for Voice over LTE and is a technology that enables voice calls to be made using the 4G LTE infrastructure instead of traditional 2G/3G networks. It is designed to provide better call quality and faster data transfer.

Call Routing

When a VoLTE user calls a 2G or 3G only phone, the call is routed through the Jio network. The Jio network handles the conversion and ensures that the call connects to the 2G or 3G network as needed. This seamless transition between technologies allows Jio users to connect with any phone without any additional setup or user action.

Seamless Experience

The user making the call does not need to take any special action. The network manages the compatibility between different technologies automatically, providing a seamless experience for both the caller and the recipient.

So, regardless of the technology used by the receiving phone, Jio's network can facilitate the call.

Connecting with Any Phone on Jio

Yes, you can connect any phone from Jio. You can even call landlines using Jio. It does not matter which phone you are calling; the connection will still work.

Calling 2G/3G Numbers with Jio

Yes, with Jio, you can call 2G and 3G numbers. However, there may be some issues with call quality due to the limitations of the receiving network. These limitations can reduce the overall quality of the call. Although the technical limitations are a topic for another discussion, the call quality is an essential consideration.

Making VoLTE Calls

To make a VoLTE call, the only requirement is that the caller must have a VoLTE phone with a SIM on which VoLTE calling is enabled. Once these requirements are met, the user can make calls irrespective of the technology at the receiver end. This means that a VoLTE call can be made to a user with a 2G SIM or a 3G SIM. The call forwarding to other networks would require sufficient Points of Interconnect, which is managed by the receiver's operator.

Common Issues and Expectations

While calls can be made, you might encounter some challenges. For instance, making calls to other networks might pose issues such as:

The other network might block calls or be too busy to handle your call. The quality of the call may not be as high as you'd like, especially when the other network does not support VoLTE.

Personal experience suggests that the call quality with Jio to BSNL is often better than with Airtel. However, the quality of Airtel calls has deteriorated over the past few months.

In summary, while you can connect with 2G/3G phones using Jio, keep in mind that call quality might be affected by the limitations of the other network.