Betting multiple selections in same race on mobile

I like to bet more than one selection in a race but currently have to place individual single bets, one after the other.
Is there any way on the mobile application I can make all my selections in the race then place bets simultaneously.
I am still using the mobile app on an old nokia 6280 works ok but quite a bit slow and has small screen.

I am ready to buy something new for my mobile betting (eg when I'm in the pub on a saturday afternoon) and would ask for other members recommendations. I dont particulary want to carry a large laptop round with me but what about netbooks / dongles or large screen phones?  Any help as always will be appreciated.

Many Thanks

Old man of Angus