Hello how may I help you? Hi, I have a question. Yes, what would you like to know? How do I change the brightness of my phone? You click the settings app, go to screen settings, and choose the brightness option Ok thank you. What else would you like to know? Can I delete multiple contacts at once? Yes, just click the small box on the top right of your contact list and it will highlight all your contacts, deselect the boxes of the contacts you want to keep then choose "delete" Great, thank you very much. Is there anything else you would like know? No that is it. Thank you.