Insert Other Carrier Sim card. if phone shows any message like below list so your At&t LG V40 THINQ phone is locked. if it accepts another Carrier Sim Card so your phone is Unlocked.
Enter restriction code or SIM card rejected
Enter special code
Enter Correct SIM
Incorrect SIM
Invalid Network SIM…Enter Code
Invalid SIM”
Phone disabled! NETWORK LOCK
Invalid Network SIM
Enter Sim Network Unlock Pin
Enter Sim Network Unlock Pin
Enter Network Unlock Code
Enter MNC2 Code
Enter Unlock Pin
What is the refund policy?
We have simple policy to issue refund. If for any reason the At&t LG V40 THINQ Network unlock code provided does not work, Attphoneunlockingshop.us will grant a 100% refund on the purchase after video proof of the unlock code not working is provided.