If you're stuck on SMS verification when trying to open Gmail, you can try a few workarounds. First, ensure the phone number you're using is active and can receive texts. If you're not getting the code, try the "Call me" option instead. If you don’t have access to a phone, use a recovery email address (if you’ve set one up) to verify your account. Alternatively, use the Google Account Recovery page to bypass verification and regain access. If you're creating a new account, try signing up from a device or network Google recognizes, as it might skip the SMS step.