Turn off WiFi location in your phone and see how long it takes for it to get a GPS fix, or if it never gets one.

They are fairly large cells. I assume the “bad” cells are displaying some maxima-based aggregate rather than implying the whole area (or a large part of it) in them is noticeably jammed.

Also, the reports are coming from aircraft which have a much larger horizon at altitude. The jamming from Kaliningrad probably doesn't have any effect on the ground at long distances.