The linked article used 200 mW/cm^2 for 5 to 10 minutes. This is orders of magnitude more light exposure than an iPhone would create - it wouldn't even be able

The linked article used 200 mW/cm^2 for 5 to 10 minutes. This is orders of magnitude more light exposure than an iPhone would create - it wouldn't even be able to from its battery capacity. The light emitted by the iPhone would be closer in power to what a normal TV remote emits.