They should have the details of the law printed out in front of them.
Scrolling through on a phone seems very limited.
They can write down notes and they can reply to constituents after they vote.
All computer programs should also be printed and reviewed using punch cards!
A literal computer with arguably more features than a modern desktop is too limited!
This is a totally sane take! I know I like writing things twice, or using a format without any ability to search through it.
They are not editing it, they are reviewing it and making notes.
Laptop use is...fine, but I don't believe for a second they are reviewing the entire bill on their phone.
You don't take tests on your phone, nor should you legislate on your phone.