Hi carolsouza,
Welcome to Sony's Community Site!
If I've understood you correctly, you can delete the pictures on your phone gallery app. For steps on how to delete images/videos, please check your smartphone's supplied manual.
For further assistance regarding your concern, please contact the Sony offices/Sony representative offices nearest to your place of residence in Asia Pacific region http://www.sony-asia.com/countryselector.html?hpid=countryselector:AsiaPacific. Due to proximity, they are in a better position to respond to your questions or concerns.
If my post answers your question, please click the button below "Accept as Solution".
Regards,
Dave