Problem with Optek OP265AA infrared LED
I can't see an IR remote LED on my iPhone, so I'm not sure the phone camera means much. 

If the LED has current going through it (measure the voltage across the series resistor) and the voltage across it is normal, it's virtually surely emitting light. 

If the voltage across the LED is significantly less than expected for the current, the LED is fried. Some LEDs have more than one "fried" mode (sort of like medium-rare and well-done). 

If the LED is drawing no current and thus has the supply voltage across it, it's either been severely damaged or is connected backwards. Curve from the datasheet here: