There is hybrid slot.I have 32 GB Redmi Note 3. Big issue- Auto rotate does not function properly. GPS is not 100% correct. It has failed GPS test. After MIUI update to 8 still Screen rotation isse persist. Camera very good, Video even better. Please upgrade to Marshmallow as Nought have come. Please move fast XIAOMI to beat others. This Redmi Note 3 mobile, Mazor issue is my 4g sim not showing in both slots of sim. No networks in both slots. I checked that sims in other phones but working properly. I also checked the other phone sim to the red I but no network. This is a prime need and without the sim acceptation or network this phone is a total waste of money. In this phone you can run only one combination either 1 sim+ 1 sim or 1 sim+ 1 memory card up to 32 gb. It means you can’t run both sims and memory card at a time.