Reference information

11. What about wireless phone interference with medical equipment?

radio frequency energy (RF) from wireless phones can interact with some electronic devices. For this reason, FDA helped develop a detailed test method to measure electromagnetic interference (EMI) of implanted cardiac pacemakers and defibrillators from wireless telephones. This test method is now part of a standard sponsored by the Association for the Advancement of Medical instrumentation (AAMI). The final draft, a joint effort by FDA, medical device manufacturers, and many other groups, was completed in late 2000. This standard will allow manufacturers to ensure that cardiac pacemakers and defibrillators are safe from wireless phone EMI. FDA has tested hearing aids for interference from handheld wireless phones and helped develop a voluntary standard sponsored by the Institute of Electrical and Electronic Engineers (IEEE). This standard specifies test methods and performance requirements for hearing aids and wireless phones so that no interference occurs when a person uses a compatible phone and a accompanied hearing aid at the same time. This standard was approved by the IEEE in 2000.

FDA continues to monitor the use of wireless phones for possible interactions with other medical devices. Should harmful interference be found to occur, FDA will conduct testing to assess the interference and work to resolve the problem.

12. Where can I find additional information?

For additional information, please refer to the following resources:

•FDA web page on wireless phones http://www.fda.gov/cdrh/phones/index.html

•Federal Communications Commission (FCC) RF Safety Program http://www.fcc.gov/oet/rfsafety

•International Commission on Non-Ionizing Radiation Protection http://www.icnirp.de

•World Health Organization (WHO) International EMF Project http://www.who.int/emf

•National Radiological Protection Board (UK) http://www.nrpb.org.uk/

July 18, 2001

For updates: http://www.fda.gov/cdrh/phones

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3390 specifications

The Nokia 3390, introduced in 1999, is a classic mobile phone that symbolizes the peak of the early mobile phone era. It took the market by storm with its robust design and a range of appealing features. As part of the Nokia 3300 series, the 3390 was designed with a focus on durability and user-friendliness, which made it a favorite among consumers during its time.

One of the standout characteristics of the Nokia 3390 is its compact and lightweight design. Weighing just 133 grams, it easily fit into pockets and purses, making it extremely portable. Its dimensions of 113 x 48 x 22 mm offered a comfortable hold and an ergonomic feel. The device was known for its resilience, featuring a strong plastic casing that could withstand everyday wear and tear.

The Nokia 3390 featured a monochrome LCD display with a resolution of 48 x 84 pixels. While this may seem primitive by today’s standards, it was perfectly suitable at the time for displaying text messages and simple menus. It also supported a variety of customizable wallpapers and ringtones, allowing users to personalize their phones to match their style.

One of the key technologies integrated into the 3390 was its GSM connectivity, which enabled users to make and receive calls and send SMS texts with ease. The model was equipped with a long-lasting battery, offering up to 5 hours of talk time and 300 hours of standby time, making it an excellent choice for on-the-go communication.

In terms of functionality, the Nokia 3390 came with several built-in features such as the iconic Snake game, which captured the attention of millions and became a cultural phenomenon. Additionally, the phone supported messaging functions, including SMS, enabling users to communicate rapidly and conveniently.

The user interface was straightforward, characterized by Nokia's signature four-way navigation key, which simplified browsing through menus and settings. Additionally, the 3390 featured a remarkable ringtone composer, allowing users to create custom ringtones, enhancing the personalization aspect of the device.

Overall, the Nokia 3390 represents a significant chapter in mobile phone history. Its combination of durable design, user-friendly features, and impressive battery life made it a beloved choice for many, paving the way for future mobile innovations while remaining a nostalgic symbol for mobile enthusiasts.
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