Yes, BlackBerry KEY2 does support wi-fi calling.
Yes, BlackBerry KEY2 does have the 3.5 mm headphone jack.
Yes, BlackBerry KEY2 does have the FM radio support.
Yes. Though BlackBerry KEY2 does not have the LED flash for the front camera, it does have the Selfie Flash using LCD display.
Yes, BlackBerry KEY2 is VoLTE enabled mobile phone.
Stellar battery life. A tactile and genuinely useful keyboard. Great software with a focus on security and privacy. What more could you want? The BlackBerry Key2 is an exceptional phone.
The BlackBerry KEY2 is the best Android-powered BlackBerry ever made, and it improves on last year's formula in almost every way.