This Video will show you the process of Carrier unlocking HTC ONE M9 smartphone so you can use it anywhere in the world!
How to Unlock your HTC ONE M9 (SIM Unlock) smartphone click here:
1) Simply visit theunlockingcompany.com and select your device from the list and purchase the code.
2) Once you receive the code, insert your sim card that you want to use with the phone and wait for the device to ask you to enter the PIN.
3) Use the code that was sent to you via email and BAM your phone is unlocked immediately and you can use it on the carrier you choose.
Is your Sim Card too big/small? See this video: http://bit.ly/1nyjaIe
Questions or comments? Leave them in the comment section down below and I will do my best to answer them.