By Donna Kallner I didn’t intend to call 911 recently. But while putting my phone in the pocket of pants that are a bit snug, I must have accidentally pressed the volume button “five times in rapid succession”. I was puzzled by the alert tone sounding from my posterior. By the time I got the phone fished out and understood what was happening, the screen giving me the option to cancel the 911 call was flashing off. And my phone was dialing 911. A…