We couldn't use the PS4 because there was no electricity.
They couldn't read their text messages because they were in a no WI-FI zone.
We could send letters when we were little.
Our grandparents could send postcards when they went on holiday.
We couldn't log in.
They couldn't use their mobile phone.
I couldn't call you because I had no signal.
My grandma could call her friends from home.
