The Sony Xperia Z Ultra is unique in that you can use a non-capacitive stylus or pencil on the display. However to come round full circle, the Xperia Z Ultra can be turned into a pen by using a Jackpen.
This tiny little pen can be stored into a handset’s 3.5mm headphone jack, so that you’ll never be without a pen. Then if you need it, you simply turn it around to use it as a pen. Obviously this will work with any phone, but we’re sure it can’t look any more ridiculous than on the Xperia Z Ultra, especially considering the headphone placement and size. For more details on the Jackpen click here.