Yes, BlackBerry KEY2 does have the MicroSD card slot. It basically has a hybrid slot. You can expand memory up to 256GB.
Yes, BlackBerry KEY2 does have the OTG support.
Yes, BlackBerry KEY2 can record 4k videos at 30fps.
Yes, BlackBerry KEY2 does have the FM radio support.
BlackBerry KEY2 is available in 2 variants - Single sim and Dual Sim. The model available on OnlyMobiles.com is a dual sim variant. It has a hybrid sim slot. You can use either 2 sim cards or 1 sim card and a memory card.
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.