How do I take crash log on Blackberry touch device?

In one of the site its written that to take a crash log on Blackberry device, on home page we nee开发者_JS百科d to press Alt+lglg. This worked fine for me. But on touch devices keyboard does not comes on Home screen, so how do I take crash log?

Press and hold ?123 to lock the numeric keyboard. Then press ,5,5.