Although earlier BlackBerry smartphones had physical keyboards, all smartphones today use a touchscreen keyboard to enter text (see BlackBerry
On most smartphone keyboards, pressing the space bar twice inserts a period and space to end the sentence. Touchscreen keyboards have their own screen symbols for key-press feedback and upper/lower case identification.
Like smartphones, all tablets have touchscreen keyboards, and they differ somewhat in their layout. External physical keyboards that work with a tablet have their own feel just like desktop computer keyboards can be vastly different. See virtual keyboard
, predictive text
and thumb culture