Hi Quectel Team, I am working with the EC200U-CN module using QuecOpen on our custom-designed PCB. We are facing a network registration issue and would appreciate your support in identifying the root cause. Issue Description The module is unable to register on the network for Jio SIM. Airtel SIM…

Pls check the topic [image] [EC200U200U_CN] Jio SIM Card Not Working but Other SIMs Work (ESP32-S3 + Internet Access Issue) IoT Modules Module: Quectel EC200U Firmware Version: EC200UCNAAR03A09M08 MCU Platform: ESP32-S3 (ESP-IDF) Working SIMs: Airtel, Vodafo…

It seems that JIO only supports IPv6. You can configure the IP type of the APN to be a single IPv6 address and try again.

EC200UCN network registration issues

Technical Subjects Open Solution

herbert.pan-Q July 22, 2026, 3:46am 2

Pls check the topic