If I have RN3 on hand, how do I check it is MTK or SnapDragon 650?
I dont think can view under "ABOUT" ?

MTK only dual sim, but cannot put MicroSD?

RN4 out soon!
Mi release new model faster than we buy! Mi too fast or we consumers too slow?

RN4

Thanks for the youtube link.
at 4:41, it show snapdragon 618 instead of 650 

Other than regconise the SimCard slot to compare between MTK and SD 650, from the youtube link, it use AIDA64 apps installed and show up all the details, is there any way to view from firmware/software?

Thanks guys for all the replies! appreciate it!

Any advice on any recommended seller that i can look for ? Am planning to get the SD650 version with 32gb/3ram.

Btw, since the phone supports dual sim card, can it run two whatsapp on two numbers simultaneously?

Lucky i waited for the Pro. I didnt know about this spec. I love my extended memory

Dual Sim & SD Card Simultaneously on Xiaomi Redmi Note 3 step by step guide

One plus one has higher clocked cores too. I mean yes sd650 is a great processor but you have to credit the sd801 too as it is flagship grade processor and still after 2 years never makes the opo lag in anyway. That's my experience.

I've been experiencing slow downs on my note 3. Not sure if it was Opera or the phone. Have to clear opened apps before it runs ok again.

Im using the latest firmware.

If this persists,  ill probably change phone.

AP set might have different ROM installed.
The one I got after buying has Swiftkey has default keyboard and I can't seem to find OTA update to 7.5.3.
I downloaded 7.5.3 manually and then choose the package so it says something about different version and the phone had to reset to apply the update package.
The update I downloaded comes with google keyboard and pinyin input.

I think you can ask the shop to flash to latest ROM but I bought it from gemfive so can't do request.