1. Start by opening the application and go to the "Sell" section, then choose "Post Ad."
2. Select the category of the device you want to sell and click on "Next."
3. Click on "Start" to test the functions of the device you want to sell to generate a report about its condition.
4. Continue interacting with the device test until it is complete.
5. After the device test is complete, click on "Go to Ad Details," then enter the IMEI number of the device and its battery status, and click "Continue."
6. Fill in the required information, making sure it is accurate, then click "Next."
7. Enter your personal information as required and click "Next."
8. Choose the ad package that suits you and click "Next."
9. Choose your preferred payment method and click "Next."
10. Complete the payment information to finalize the payment process, then click "Pay."

After these steps, your used device ad is ready to be published on the MobileMasr application successfully. The ad will be published after being reviewed by the team responsible for reviewing and publishing ads on the MobileMasr platform.