Hook: Did you know your VIVO X200 Pro has a hidden diagnostic menu, IMEI checker, and testing tools — all accessible through simple number codes? Here’s how to unlock them safely. What Are Secret Codes (USSD & MMI Codes)? Secret codes are numeric strings you dial in the Phone app. They trigger hidden menus for testing hardware, checking device info, or running diagnostics — no root required. Step-by-Step Guide Step 1: Open the Phone dialer app (the same one you use for calls).
Enter the code exactly as shown. Do not press Call — most codes activate automatically. How to Use Secret Codes on VIVO X200 Pro
Galaxy will be closed on Thursday, November 27 (Thanksgiving) and Friday, November 28 (Black Friday).
While our team will operate at reduced capacity throughout the week, these are the only full closure days.
To ensure timely processing, the last day to ship samples is Tuesday, so they can be received on Wednesday.
Any samples shipped on Wednesday or later will not arrive until after our holiday closure.