If the lock doesn’t open, turn all three dials down one number.Repeat the process for the other two dials.
The flashlight and camera on your phone can help you zoom in on it. If the idea of that is overwhelming and your luggage features a built-in TSA lock, you can try this: Although, admittedly, this seems time-consuming, they assure it should take 30 minutes or less, especially if the first number is a 0, 1 or 2 (something to keep in mind when you’re coming up with a new combination). Travel Sentry, whose red diamond logo certifies that a lock is TSA-approved, recommends trying every possible combination from 000-999, starting with 000, 001, 002 … and working your work to 999.