"Nexus" phones that shipped with 4.0 ICS or later do not have a microSD slot and only use internal storage. This was a design decision by the Android team, in

"Nexus" phones that shipped with 4.0 ICS or later do not have a microSD slot and only use internal storage. This was a design decision by the Android team, in response to users on the Nexus One (Android 2.x) getting confused about having 2 GB free on their SD card and not being able to install DRMed apps because their 512 MB of internal storage was full.