You understand then that there is absolutely no possible fix for that right?
If your grandma will follow current instructions, she will follow these new instructions including a 24 hour wait.
Your grandma will follow instructions to walk down to walgreens and buy a brand new device if they tell her. The solution has nothing to do with the device and everything to do with you needing to be an adult and figure out how to get your grandma to not follow directions of scammers.
This isn't a tech problem and you cannot solve it with tech.
If your grandma will follow current instructions, she will follow these new instructions including a 24 hour wait.
Your grandma will follow instructions to walk down to walgreens and buy a brand new device if they tell her. The solution has nothing to do with the device and everything to do with you needing to be an adult and figure out how to get your grandma to not follow directions of scammers.
This isn't a tech problem and you cannot solve it with tech.