The 25-year-old Samaraweera, who had taken just five wickets in his previous nine Tests, began the slide when he had Kapali caught bat-pad by Jehan Mubarak at short-leg for 23.
The concept in question is quite simple: a primary LCD would be visible at all times, and when the occasion called for another panel or two, they'd simply slide into view, ready to serve as a number pad, or settings control, predictive text display, or even a full-fledged split keyboard.
Additionally, the number pad is now on the bottom third of the dual-slide mechanism, not a big deal, but just enough to throw off users upgrading the first time it's opened.
