Dropping my iPhone

I am usually really careful when it comes to my phone, but accidents do happen and I dropped my phone on the cement ground. Since my phone dropped at free fall which means my phone was falling through the sole influence of gravity, it was accelerating vertically at 9.81 m/s^2 but with a initial velocity of zero. This is to say that my phone at free falling is changing by 9.81 m/s every second, but luckily enough my phone did not hit the ground hard enough to crack my screen. Also since my phone was falling at free fall that means there was no air resistance, and the easiest way to show other people the direction of how my phone dropping is to draw a dot diagram and the acceleration would be going down the the positive y-axis.