Hi castroervine,
Good day.
May I check with you whether your firmware is currently on the WW-15.0200.1812.503?
(settings> system > about phone> software information> build number)
Does this problem appear if you in a different location?
Could you use another SIM card of a different operator for a check?
Please kindly turn on airplane mode > for 3 seconds > then turn off it when you encounter this problem.
Thank you.