There are a few ways to validate that a contractor is certified as a Unilock Authorized Contractor. First, you can call a local Unilock (1-800-UNILOCK) or email customerservice@unilock.com, and someone can validate their information over the phone. You'll be asked to provide the contractor's company name and location. Second, a Unilock Authorized Contractor can provide an up-to-date certificate (dated with the current year). Third, if you are browsing their website, most will include the Unilock Authorized Contractor logo on their website to verify their status.