Apple’s iOS 10.3 update has solved a vulnerability that allowed iPhones to be tricked into repeatedly dialing 911, The Wall Street Journal reports. Meetkumar Desai was arrested last fall after designing the code, but a link to the code that went viral on Twitter led to pranks causing 911 operators in more than a dozen states to be overwhelmed by accidental 911 calls. The code relied on an iPhone feature that allowed users to place a call simply by pressing a phone number, but the latest update requires users to press a confirmation button before the phone will dial the number. The update will prevent the exploit from being successful even on apps that hadn’t already issued their own fix for the problem.