Attitude45–47

AT1: Using a smartphone is a good idea.

AT2: I have a generally favorable attitude toward using a smartphone.

AT3: Overall, using a smartphone is beneficial.

AT4: I think a smartphone makes my life more interesting.

Intention to use45–47

IU1: I would recommend others to use a smartphone.

IU2: I predict I will use a smartphone in the future.

IU3: I plan to use a smartphone in the future.

IU4: I expect my use of a smartphone to continue in the future.

Perceived ease of use5,6

PEOU1: Operating the smartphone was easy for me.

PEOU2: My interaction with the smartphone was clear and understandable.

PEOU3: I found the smartphone easy to use.

PEOU4: I found it easy to get the smartphone to do what I wanted it to do.

Perceived usefulness5,6

PU1: Using the smartphone today helped me productively locate the bus departure hour.

PU2: Using the smartphone helped me effectively find the bus departure hour.

PU3: The smartphone was useful in finding the bus departure hour.

PU4: Using the smartphone improved my ability to find the bus departure hour.

Perceived affective quality48

PAQ1: I felt excited when using the smartphone.

PAQ2: I would miss using a smartphone if I no longer had it.

PAQ3: The smartphone I used today was attractive and pleasing.

Perceived control48

PC1: The smartphone at some time stopped unexpectedly (reversed).

PC2: The smartphone operated consistently overall.

PC3: The smartphone allowed me to do the task with sufficiently few keystrokes.

PC4: The smartphone supported the operation of all the tasks in a way that I found useful.