I have the same exact problem here in Elkhart IN. Tried two different manufacturer, Gig size Sim cards, both within Moto E4 parameters and same problem. Continually being told Cache needs cleaning. This is not a new problem ongoing for over a year. Verizon no help, now what.
As a valued customer, your service and device concerns are our concerns too. It saddens us to hear that you've been experiencing problems with your device as a result of viewing a SIM Card message notification from your Moto e4 Smartphone for over a year. Having a reliable device is always the expectation and we'd be more than glad to provide troubleshooting assistance for you here, so let's get started. Have there been any recent changes with your phone? (e.g., software update, new apps downloaded, recent SIM Card change, etc.) We'd also like to avoid having you complete troubleshooting steps that you've already done. Can you tell us what troubleshooting steps you've completed? - RobertC_VZW