US FDA Consumer Update

In summary, we do not have enough information at this point to assure the public that there are, or are not, any low incident health problems associated with use of mobile phones. FDA continues to work with all parties, including other federal agencies and industry, to assure that research is undertaken to provide the necessary answers to the outstanding questions about the safety of mobile phones.

What is known about cases of human cancer that have been reported in users of hand-held mobile phones?

Some people who have used mobile phones have been diagnosed with brain cancer. But it is important to understand that this type of cancer also occurs among people who have not used mobile phones. In fact, brain cancer occurs in the U.S. population at a rate of about 6 new cases per 100,000 people each year. At that rate, assuming 80 million users of mobile phones (a number increasing at a rate of about 1 million per month), about 4800 cases of brain cancer would be expected each year among those 80 million people, whether or not they used their phones. Thus it is not possible to tell whether any individual's cancer arose because of the phone, or whether it would have happened anyway. A key question is whether the risk of getting a particular form of cancer is greater among people who use mobile phones than among the rest of the population. One way to answer that question is to compare the usage of mobile phones among people with brain cancer with the use of mobile phones among appropriately matched people without brain cancer. This is called a case-control study. The current case-control study of brain cancers by the National Cancer Institute, as well as the follow-up research to be sponsored by industry, will begin to generate this type of information.

What is FDA’s role concerning the safety of mobile phones?

Under the law, FDA does not review the safety of radiation-emitting consumer products such as mobile phones before marketing, as it does with new drugs or medical devices. However, the agency has authority to take action if mobile phones are shown to emit radiation at a level that is hazardous to the user. In such a case, FDA could require the manufacturers of mobile phones to notify users of the health hazard and to repair, replace or recall the phones so that the hazard no longer exists.

Although the existing scientific data do not justify FDA regulatory actions at this time, FDA has urged the mobile phone industry to take a number of steps to assure public safety. The agency has recommended that the industry:

•support needed research into possible biological effects of RF of the type emitted by mobile phones;

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i58sr specifications

The Nextel i58sr was a standout device in the realm of communication technology, primarily catering to business and professional users. Released as part of Nextel's ruggedized phone lineup, the i58sr was designed with durability and functionality in mind, making it a reliable choice for users in demanding environments.

One of the defining features of the i58sr was its sturdy design. The phone was built to withstand tough conditions, with a rugged exterior that offered resistance to shocks, vibrations, and water. This made it ideal for users who worked in construction, outdoor activities, or any field where accidents and rough handling were a possibility.

The i58sr boasted a compact and lightweight form factor, making it portable and easy to handle. Its ergonomic design included a comfortable grip, essential for prolonged use in the field. The device also featured a clear display that provided essential information at a glance, ensuring that users could easily navigate through applications and features even in bright sunlight.

A significant highlight of the Nextel i58sr was its push-to-talk capability, which allowed for instant communication with other Nextel users. This feature enabled users to connect with team members quickly, facilitating coordination and enhancing productivity, especially in high-paced work environments. The phone also supported traditional voice calls, ensuring versatility in communications.

Technologically, the i58sr utilized Nextel's iDEN network, combining radio communication and cellular service to deliver unique features like two-way radio capability. This hybrid technology enhanced the range of communication options available to users, allowing for seamless transitions between direct radio and phone calls.

In terms of battery life, the i58sr performed admirably, providing extended usage capabilities that were crucial for users often away from power sources. This reliability was further complemented by the device's long-standing reputation for functionality, which included features like programmable buttons for quick access to frequently used functions.

In summary, the Nextel i58sr was a significant player in the domain of rugged communication devices. Its combination of durability, push-to-talk capabilities, and a reliable power source made it a preferred choice for professionals in various industries. By blending traditional voice calls with advanced push-to-talk technology, it stood out as an essential tool for effective communication in challenging environments.
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