Yes, Nokia 3310 does have FM radio.
No. You cannot download whatsapp in Nokia 3310.
Yes. The phone comes with in-built games. However, you can download also from the Nokia store, if you want.
Yes, Nokia 3310 does have slot for 3.5 mm music jack.
No. Nokia 3310 does not support Nibuzz chat messenger.
There are a few things that do bring back the feeling of owning an original Nokia 3310, such as the classic Nokia ringtone, the physical buttons, the tiny body, and solid build quality.
You can buy other feature phones for less than this, and the new Nokia 3310 doesn't justify the extra outlay over the simple nostalgia card it's playing.