Off the grid means living where no record or signal can find you. Go off the grid completely.
The original sense was electrical, meaning not connected to the mains supply. To live off the grid now means avoiding banks and phones as much as power lines.
1phraseoff the gridLiving where no record or signal can find you.
“He went off the grid for two years and nobody heard a word.”
off the grid is a phrase.
Practised in Spying & Secrecy