First of all, I got this from Amazon.in on a sale and its the best deal got the 3gb/32gb variant for 7500 and also bajaj no-cost EMI was there so its the best deal there is considering launching price was 11k.
About the product after 3 months usage:(Pros)
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It is good the sd 636 comes real handy when playing games like PUBG or simple multitasking.
It has a Full HD screen and brightness is also good, GPU works great when gaming I played PUBG in HD graphics and it runs very smoothly no heating issues there.
Rear Camera is very good with a few tricks from youtube you can install camera2api and then Google Camera without rooting avoiding any risk of warranty void then you got yourself a great nightscape mode too.
The battery is enormous from Asus nowadays almost every Asus device came with a 5000 mah battery with gaming and watching movies it lasts over a day easily
Now the cons:
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The selfie camera is not very good but considering the price I got it is still the best in the class of under 8k budget phone even after nearly one year of launching.
The UI which needs to be excellent as near stock lags sometimes especially after pie update I don’t know if that’s OTA updates error or a problem but it’s annoying when compared to sd 625 Redmi Y2 opening common apps or restarts time is nearly same or more than sd 625. That is another problematic thing considering sd636 is supposed to be much better than sd 635 but in case of gaming sd 625 is no comparison to sd636 with better gpu.