| SIMCARD | Removable circuit board (standard, micro or nano) acting as the "brain" of a smartphone or mobile device (3,4) |
| TECH | "Bio" or "nano" follower |
| IPOD | Shuffle or nano |
| ECU | The brain of a modern motorcycle that can be programmed to modify how it performs. (3) |
| CPU | The "brain" of a PC |
| CRADLE | A charging station for a device such as a smartphone or tablet (6) |
| MOBILE | Short word for a smartphone; or, an aerial stabile-like sculpture, sometimes hung over a cot (6) |
| REDADMIRAL | Besotted lad married one with the brains of a butterfly |
| LOBAR | Of a rounded division of an organ, as the brain |
| CEREBRUM | The anterior portion of the brain of vertebrates, also called the telencephalon |
| EBOOK | Digital novel or other publication read by means of a Kindle, Nook, smartphone or tablet (1-4) |
| DEVICE | Word for a desire or intention originally, later a contrivance, drawing, heraldic emblem, motto, peripheral, plan/plot, smartphone or tool (6) |
| UPSTAIRS | Puts on airs in a manner of speaking where the brains of the operation are (8) |
| SUPEREGO | Part of the mind acting as the conscience in psychoanalysis |
| ALPHAWAVE | Normal electrical impulse in the brain of someone awake and at rest, occurring at a frequency of 8 to 12 hertz (5,4) |
| STYLUS | Tool for writing on a smartphone or tablet |
| GPS | Directional aid on a smartphone or dashboard: Abbr. |
| CORTEX | Outer layer of organ, such as the brain (6) |
| SPEARHEADING | Acting as the leading force in a military attack (12) |
| LAWLORDS | Judges acting as the highest court of appeal up to 2009 |
