Firstly, are you sure your phone is locked?
To be sure that your phone is locked, verify it by inserting another carrier SIM. If the phone shows „Network locked”, Enter special/ unlock code” or a something like this, then your phone is locked and you can proceed the unlock process
By buying this product you will receive an unlock code for your ASUS ZenFone 2E Z00D device locked to AT&T USA.
This unlocks code is received based on your phone IMEI. Your IMEI can be found by typing *#06# on your phone and must have at least 15 digits. This at&t Asus unlock works for any IMEI but if your phone is blacklisted (reported lost or stolen) even if the unlock will work,the phone might not work in the USA.
Please verify that your ASUS ZenFone is asking for unlock code when turned on with a sim from a different carrier before ordering this unlock.
If you will make a free account, the at&t Asus unlock codes will show there also in your Account Dashboard.
Processing time: 1-4 days (normally in about 2 days)
-ASUS ZenFone 2E Z00D locked to AT&T USA Network
How the AT&T Asus unlock works and Instructions
When buying this unlock code for the ZenFone 2E locked to ATT, will have to insert your phone IMEI and model in the special boxes below the price. Based on that will find you phones unique unlock code and email it to your email. Once you receive it will have to insert a sim from another carrier in the phone so the phone will ask for unlock code, then insert the code we provided.
-Be careful to write the IMEI correctly, without any space or points,the IMEI must have 15 digits (Ex: 358721057982717 ) and can be found by typing *#06# on dial window, like when making a phone call
What are the advantages of unlocking your Asus?
Once you'll unlock your Asus, you'll increase its selling price. Also, consider the fact that you'll save money when traveling by using a local sim card because you’ll be able to use your phone with local network providers, avoiding roaming fees.