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.
Purchase - Dec 2020
Model - TP-MR6400
Hardware version - TL-MR6400 v5 00000001
Firmware version - 22.214.171.124.9.1 v0001.0 Build 200511 Rel.43036n