iam trying to sell my mini se but i cant get it to connect ith and andorid phone , please help

Which phone?

Hi there. Thank you for reaching out and we're sorry for the trouble. Can you please confirm what mobile device are you using so we can check it here on our end? Also, did you try to reinstall the app on your mobile device and enable the developer option then try to connect again to see if the issue persists? Please keep us posted. Thank you.