Bought this router 7 months ago and it's been working fine untill today. I've bee using it with an unlimited data sim card from Smarty (Three network) its connected to my PC via ethernet cable and I h

I've tried two models: Archer MR200and now MR600. Both router constantly drop LTE connection. Another router, DLINK DWR921, on the same sim card, never drops LTE connection. My other devices on differ