Hi,

I have bought TL-MR6400 router few weeks back. Initially sim card was detected but when I changed the sim it is not getting detected.

I am using Airtel 4G sim which is working qh n used in the mobile phone.

I retarted many times, did factory reset but SIM card is still not getting detected.

Kindly help me how to rectify this.

Details-

Purchase - Dec 2020

Model - TP-MR6400

Hardware version - TL-MR6400 v5 00000001

Firmware version - 1.1.0.0.9.1 v0001.0 Build 200511 Rel.43036n

Regards,

Arun