If you want to open the sign-in for the desktop version of Gmail on a mobile device, you can follow the steps below:
1) Open your mobile web browser and go to the Gmail sign-in page at Open.
2) Once the page loads, tap the three dots in the upper right corner of the browser to open the options menu.
3) Look for the "Request desktop page" or "Desktop page" option and tap on it. This should reload the page as if you were accessing it from a desktop browser.
4) You should now see the desktop version of the Gmail login page. Enter your email address and password and tap "Sign In" to access your account.
Note that the "Request desktop site" option may not be present in some mobile browsers or may be in a different location. If you cannot find the option, you may need to search online for instructions for your mobile browser. Also, while it is possible to access the desktop version of Gmail on a mobile device, it may not be optimized for smaller screens and can be more difficult to use. It may be more convenient to use the Gmail mobile app or the mobile web version of Gmail instead.