I was reloading this morning when my phone rang. I answered it on Bluetooth. As soon as I answered the scales jumped by 2.0 grains and continued to fluctuate. I immediately stepped away. I never talk on the phone while loading anyway but was expecting this call. My stuff will stay in the other room from now on.
Confirmed. Ran a test with 2 cell phones. Only one was with the person measuring powder approx 1.5 feet away from the electronic scale. Grains fluctuated the entire time, but peaked at 2 grains when everyone hung up.