What type of SIM card does iPhone 6s plus use? Nano or micro

[iMore Question]

Can I use my Nano sim card in the 6s Plus? Will it even except it or maybe my Micro SD Card or is that a no?

 

[Ledsteplin]

Not updated yet for the 6s and 6s Plus. My guess is the same as 6.
https://support.apple.com/en-us/HT202645