Section 12

to 22 hours per day. These conditions are not similar to the conditions under which people use wireless phones, so we don't know with certainty what the results of such studies mean for human health.

Three large epidemiology studies have been published since December 2000. Between them, the studies investigated any possible association between the use of wireless phones and primary brain cancer, glioma, meningioma, or acoustic neuroma, tumors of the brain or salivary gland, leukemia, or other cancers. None of the studies demonstrated the existence of any harmful health effects from wireless phones RF exposures. However, none of the studies can answer questions about long-term exposures, since the average period of phone use in these studies was around three years.

What research is needed to decide whether RF exposure from wireless phones poses a health risk?

A combination of laboratory studies and epidemiological studies of people actually using wireless phones would provide some of the data thatare needed. Lifetime animal exposure studies could be completed in a few years.

However, very large numbers of animals would be needed to provide reliable proof of a cancer promoting effect if one exists. Epidemiological studies can provide data that is directly applicable to human populations, but ten or more years' follow-up may be needed to provide answers about some health effects, such as cancer. This is because the interval between the time of exposure to a cancer-causing agent and the time tumors develop - if they do - may be many, many years. The interpretation of epidemiological studies is hampered by difficulties in

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SGH-x475 specifications

The Samsung SGH-x475 is a compact and stylish mobile phone that was launched in the early 2000s, representing a significant step in the evolution of mobile technology during that era. Aimed at users looking for a blend of functionality and design, the SGH-x475 featured a clamshell design that was not only fashionable but also practical, protecting the screen and keypad when not in use.

One of the standout features of the SGH-x475 is its lightweight construction. Weighing in at a mere 90 grams, it was designed for portability, making it easy to carry around in pockets or bags. The phone showcased a 1.5-inch monochrome display with a resolution of 128 x 128 pixels, which, while modest by today's standards, offered clear visibility for incoming calls, messages, and menu navigation.

The SGH-x475 supported both GSM 900 and 1800 bands, providing users with reliable connectivity across various regions. This dual-band capability was particularly advantageous for users who traveled frequently, as it ensured that they could stay connected across different networks. The phone also featured SMS (Short Message Service) capabilities, allowing users to send and receive text messages, which was becoming increasingly popular at the time.

In terms of battery life, the SGH-x475 was equipped with a removable lithium-ion battery that provided up to 7 hours of talk time and up to 200 hours of standby time. This longevity was essential for users on the go, ensuring that the phone could last through busy days without needing frequent recharging.

The phone incorporated several ringtones and offered a vibration alert feature, providing users with customizable options for notifications. Additionally, it had a built-in speakerphone function, enabling hands-free conversations, which was a budding trend among mobile users seeking convenience.

With a focus on user-friendly design, the SGH-x475 featured a straightforward menu system, making it accessible even for those unfamiliar with mobile technology. The keypad was laid out in a traditional format, with tactile feedback that made dialling and texting comfortable.

Overall, the Samsung SGH-x475 embodied the mobile technology of its time, balancing essential features, portability, and user comfort. Although it may seem basic compared to today’s smartphones, it played a pivotal role in the evolution of mobile communication during the early 2000s, leaving a lasting impact on users looking for reliable and stylish mobile solutions.
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