> … a seatback tray table, it is generally not the right shape for all but the smallest laptop …
As someone who very much prefers having a physical keyboard, the only workable solution I have found for UK trains is an iPad with the Magic Keyboard, whose cantilever design is relatively shallow, and which provides a firm base for balancing on your legs.
There is no reason this form factor couldn't be achieved with an android tablet, but it feels relatively uncommon. Most keyboard cases I've seen are only really suitable for stable table/desk scenarios.
As someone who very much prefers having a physical keyboard, the only workable solution I have found for UK trains is an iPad with the Magic Keyboard, whose cantilever design is relatively shallow, and which provides a firm base for balancing on your legs.
There is no reason this form factor couldn't be achieved with an android tablet, but it feels relatively uncommon. Most keyboard cases I've seen are only really suitable for stable table/desk scenarios.