Hello,
We are currently using the Quectel EC20 model in one of our devices and are attempting to enable 4G VoLTE functionality, as we plan to use the JIO SIM card. However, we are facing issues with the SIM card not functioning as expected. Could you kindly provide the firmware for the EC20 module that supports 4G VoLTE? Additionally, if possible, please recommend a module with a mini PCIe interface that offers a minimum download and upload speed of 25 Mbps.
Thank You.