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general. The results are shown in figures 10 and
11.
add-on services complemented mobile TV well.
Even though the content was considered reliable,
it was not felt to be especially useful, except for
the commercial teletext services.
Problems in ease of use were reported in the
surveys of the individual services. These problems
included getting an overview of what the service
offered, and getting an idea of what was behind
individual links, e.g. length and content of the
available videos in a video-on-demand service.
Familiar teletext services got positive comments
concerning ease of use as the services provided
both the familiar way to select pages by giving
the page number and a faster way by pointing and
selecting on the page.
The results of the pilot test indicate that mobile
TV as such has potential, but add-on services
should be easier to adopt. The users did not get a
clear overview of what was available as add-on
Mobile TV got very high user acceptance
grades (Figure 10). As the TV could be switched
on from a dedicated key or from the phone's ap-
plication menu, finding mobile TV and taking it
into use was found easy or quite easy by a clear
majority of the panelists. Mobile TV was also
found easy and effortless to use. The role of mo-
bile TV was perceived as entertainment rather
than as a means of accessing useful information.
Information content was found reliable but one
third of the panelists did not agree that mobile TV
was functionally reliable. The panelists mentioned
the limited coverage area, inconsistent function-
ality in some places, and problems with device
storage capacity in the pilot test setup as the main
reasons for these opinions.
Taking into use was the main problem with
add-on services (Figure 11). In the pilot test set-
ting the users had to carry out some additional
tasks related to installation, and some services
even required updating the phone's firmware.
This partially explains the grades. However, the
panelists also had problems finding the actual
mobile TV add-on services. Add-on radio services
that were available only during a certain program
confused the users. It seems that the mere existence
of add-on services and their connections to the
TV programs will require learning from the users.
Most panelists, however, found add-on ser-
vices easy to find and the offered information was
experienced to be reliable. Panelists thought that
Table 3. Claims in the service evaluation ques-
tionnaire
TAMM
Claim
Perceived
ease of use
The service is easy to use
Perceived
value
The service provides me with useful informa-
tion
Using the service is entertaining
The appearance of the service is appealing
Trust
The service worked reliably
The service provides reliable information
Ease of
adoption
The service was easy to find
The service was easy to take into use
Table 4. Claims in TAMM questionnaires
TAMM
Interaction in general
Touch-based vs. Button-based default action
Perceived ease of use
Uploading photos was easy
Uploading was easy
Perceived value
Uploading photos is useful
Uploading photos is fun
Uploading photos is fast enough
Uploading was fast
Trust
Uploading worked reliably
I could control the uploading
Ease of adoption
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