Did you change phone before that started happening?

Thank you for responding.  I have turned my phone off every time I see that it is at 50% and recharge to 100%.  That is usually every 3 days.  Same message appears.  I have a Smart Tracphone.  I have never had this problem before and am unable to connect with a  live person at the customer service line. 

Hi Elizabeth. Have you tried restarting your phone first? How is it now? Maybe there was just a network downtime.