Traffic exceptions information
http://www.hkl.fi/poikkeusinfo
[ Helsinki City Transport]

Mobile ticket
You can order a single ticket as an SMS to your mobile phone. The return SMS includes the validity time and area of the ticket, the identification number and the sender number. The price of the ticket will be included in the phone bill. The mobile ticket is valid on trams, on the metro, on the Suomenlinna ferry, on several buslines and the commuter trains.
http://www.hel.fi/hkl/
[ Helsinki City Transport]

Timetable service
In Finnish and Swedish only.
With the timetable service passengers in Helsinki’s buses, trams, metro and commuter trains can view timetables by mobile phone. Passengers can use the service by writing or picking from the list the number of the bus line or address of the bus stop. The service returns the timetable in question and informs about possible traffic exceptions. Users can also save their own favorite timetables to the service after registration. Real-time passenger information provides passengers a forecast of the time in minutes when the next bus or tram arrives. The real-time service is in use in the bus and tram lines which are using GPS-satellite navigation.
http://omatlahdot.hkl.fi/
[ Helsinki City Transport ]

Stop timetables with Upcode
Helsinki city bus and tram stops are testing new electronic timetables which are operated by a mobile phone  equipped with a camera, Internet access and the “Upcode” software. When the user points the phone’s camera at an Upcode smart screen at the stop, the phone automatically takes a picture which triggers the phone to perform the task defi ned in the smart screen: the phone accesses the Internet site that contains the stop’s timetable. The advantage compared to printed timetables is real-time service information. The system also makes announcements of service interruptions. The service is free of charge to users. One of its applications is voice synthesised timetables for the visually impaired.
http://www.upc.fi/en/upcode/  
[ Helsinki City Transport ]

Kamo - mobile guide for public transport
http://www.kamoon.fi/
[ Helsinki City Transport ]

Helmet-library SMS
You can receive the pickup notices of your reservations as text messages to your mobile phone.
http://www.helmet.fi/screens/help.html#tekstiviesti
[ Helsinki City Library]

Numerot.hel.fi, mobile version
The numerot.hel.fi site gives the numbers of the telephone exchanges of the City of Helsinki departments, public corporations, main divisions and City employees.
http://numerot.hel.fi/mobi/
[ Economic and Planning Centre ]

Reminder of an appointment
In Finnish only.
You can receive a reminder of an appointment to a municipal dental clinic by mobile phone.
[ Health Centre ]

Helsinki Host City service
Events in Helsinki.
http://www.helsinkihostcity.fi
Helsinki.mobi service
Events in Helsinki. The site is accessible through all mobile phones with internet access capabilities.
http://helsinki.mobi/
[ Pääkaupunkiseudun markkinointi Oy ]

Pay for parking with mobile phone
Two systems are being tested in Helsinki, allowing the user to pay for parking with their mobile phones. Both methods are in use for all of Helsinki’s public parking spaces and require registration.
[ Public Works Department ]

Information about construction projects
In Finnish only.
Raksa.info is a channel for obtaining information about construction sites in Helsinki. Concise information and a possibility to send feedback is available to mobile phones by SMS. A raksa.info number is listed on a sign posted at the construction sites involved. The number can also be used to view the relevant building permit decision and drawings on the Internet.
http://raksa.info
[ Several city departments and other partners ]

External links:

YTV mobile services
Traffic information on mobi.ytv.fi.
http://www.ytv.fi/ENG/mobi/
[Helsinki Metropolitan Area Council YTV]

HITS metropolitan area traffic information
The HITS mobile service provides you with real-time traffic information and current weather information and a weather forecast. The information is presented on the mobile phone screen both as text and as icons on a map view. The service also shows the locations of parking facilities and taxi ranks, information about park-and-ride services, and information on public transport disruptions. The mobile service includes telephone numbers for taxi ranks and makes it possible to automatically telephone the taxi rank of your choice. The service provides updated traffic camera images from ten different locations. The service is easiest to download through a Nokia mobile phone's WAP browser. The application can be installed either in the phone’s internal memory or on a memory card. The mobile services are free of charge for the user, with the exception of data transmission charges payable by the subscriber.
The download address is: http://mobilog.wmdata.fi/hits
[ The cities of Helsinki, Espoo and Vantaa, YTV, the Ministry of Transport, the Finnish Road Administration, the Finnish Rail Administration ]