Just by chance I was with the car today without the key I usually carry. But I have the MG app on my phone. I only wanted to put some stuff in the car, so opened the app and tapped "unlock" on the main screen. I got in the car and sat in the passenger seat.
Then I got interested and remembered this thread and thought I'd try the Digital Key.
So I tapped the octagon with the key in it, then My Car Key. Then Keyless Start.
The first time I did this, it directed me to place the phone in the centre of the steering wheel. Then the app declared success. I leaned on the driver's seat cushion and the car fired up. No need to press the brake pedal.
So I locked the car and unlocked it and repeated the digital key stuff, without the need to do the steering wheel malarkey. As soon as I "sat" on the driver's seat, everything fired up.
So, it works for me on our 23 plate Trophy LR with rear wiper.
Edit: I forgot to add (if it makes a difference) that my phone is a Nokia XR20, running Android 14.