No sound

kzl9a9jlx6s3​ Please also check whether your phone is in battery-saving mode when this happens. 

Ok, what device do you have, what OS is it running, what troubleshooting have you done so far, how is your sound configured right now?? 
Go over the basic guide Mobile Troubleshooting Guide | EA Forums - 12718775, and if you still have issues, post back here what you did and what the troubleshooting step outcomes were.