Yes, the Xiaomi Redmi 7 does have a slow-motion video recording feature as its camera can record up to 1280x720 @ 120 fps which will surely give good quality slow-motion videos. It can also record 1920x1080 @ 60 fps and 3840x2160 @ 30 fps.
Check out how slow-motion recording works-
Check its full specifications Xiaomi Redmi 7
The Infinix Smart 3 Plus is the best among these phones as it gives a little better specifications in an overall perspective.
Let's see the main specifications-
Check Full Comparison Samsung Galaxy A10 vs Xiaomi Redmi 7 vs Infinix Smart 3 Plus
Both the phones are sold at an almost similar price with similar features but still, I feel Xiomi Redmi 7 to be better than Galaxy A10 due to the following reason:
Samsung has some great phone when you see a higher price range but at this price range, I feel Redmi 7 will do the justice.
For complete product specification check: Galaxy A10 vs Redmi 7
The Realme 3 is a better device as it gives better specifications.
Processor: The Realme 3 comes with the MediaTek Helio P70 processor whereas the Xiaomi Redmi 7 comes with the Qualcomm Snapdragon 632 processor.
Camera: The Realme 3 has a camera of 13 MP + 2 MP with F1.8 aperture whereas the Xiaomi Redmi 7 has a camera of 12 MP + 2 MP with F2.2 aperture.
Check Full Comparison Realme 3 vs Xiaomi Redmi 7
No, the Xiaomi Redmi 7 does not have the FM radio feature.
The FM radio feature is not an in-demand feature and smartphone companies don't bother to put it on their devices anymore.
So, it is rare to have the FM radio on the mobile.
Check Full Comparison Xiaomi Redmi 7
Yes, you can play PUBG on the Xiaomi Redmi 7. The Xiaomi Redmi 7 comes with the Snapdragon 632 processor which is quite good for performance but you would not be able to play it on high graphics.
Check its gameplay-
Check Full Specifications Xiaomi Redmi 7
Xiaomi Redmi Note 7 comes with plastic framed body.
It protected both on front and the back with Gorilla Glass 5.
The total in hand weight of the device is 186 Grams which is quite light due to its plastic framed body.
In the meantime, do no forget to check all the detailed specifications and other latest updates of Xiaomi Redmi 7 here.
Reliance Jio works on VoLTE technology and VoLTE works on Bands 3, 5 and 40. Since Xiaomi Redmi 7 supports band 3 and 40, it also supports Reliance Jio SIM. You can use Jio SIM in both the SIM slots on the Xiaomi Redmi 7.
You can find the complete specs of Xiaomi Redmi 7 here: Xiaomi Redmi 7