Most of the "smartphones" in this era were hybrid devices that combined these existing familiar PDA OSes with basic phone hardware.
The results were devices that were bulkier than either dedicated mobile phones or PDAs, but allowed a limited amount of cellular Internet access.
In 1971, while he was working with Boeing in Huntsville, Alabama, Paraskevakos demonstrated a transmitter and receiver that provided additional ways to communicate with remote equipment.
This formed the original basis for what is now known as caller ID.
The PDA provided e-mail; calendar, address book, calculator and notebook applications; text-based Web browsing; and could send and receive faxes.Today, smartphones largely fulfill most people's needs for a telephone, digital camera and video camera, GPS navigation, a media player, clock, news, calculator, web browser, handheld video game player, flashlight, compass, an address book, note-taking, digital messaging, an event calendar, etc.Typical smartphones will include one or more of the following sensors: magnetometer, proximity sensor, barometer, gyroscope, or accelerometer.The rise of i-mode helped NTT Do Co Mo accumulate an estimated 40 million subscribers by the end of 2001. started to adopt devices based on Microsoft's Windows Mobile, and then Black Berry smartphones from Research In Motion. and Japan, Nokia was seeing success with its smartphones based on Symbian, originally developed by Psion for their personal organisers, and it was the most popular smartphone OS in Europe during the middle to late 2000s.It was also ranked first in market capitalization in Japan and second globally. American users popularized the term "Crack Berry" in 2006 due to the Black Berry's addictive nature. Initially, Nokia's Symbian smartphones were focused on business with the Eseries, similar to Windows Mobile and Black Berry devices at the time.