The U.S. Food and Drug Administration's Center for Devices and Radiological Health Consumer Update on Mobile Phones

FDA has been receiving inquiries about the safety of mobile phones, including cellular phones and PCS phones. The following summarizes what is known—and what remains unknown—about whether these products can pose a hazard to health, and what can be done to minimize any potential risk. This information may be used to respond to questions.

Why the concern?

Mobile phones emit low levels of radio frequency energy (i.e., radio frequency radiation) in the microwave range while being used. They also emit very low levels of radio frequency energy (RF), considered non- significant, when in the stand-by mode. It is well known that high levels of RF can produce biological damage through heating effects (this is how your microwave oven is able to cook food). However, it is not known whether, to what extent, or through what mechanism, lower levels of RF might cause adverse health effects as well. Although some research has been done to address these questions, no clear picture of the biological effects of this type of radiation has emerged to date. Thus, the available science does not allow us to conclude that mobile phones are absolutely safe, or that they are unsafe. However, the available scientific evidence does not demonstrate any adverse health effects associated with the use of mobile phones.

What kinds of phones are in question?

Questions have been raised about hand-held mobile phones, the kind that have a built-in antenna that is positioned close to the user's head during normal telephone conversation. These types of mobile phones are of concern because of the short distance between the phone's antenna—

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Motorola T722i manual Why the concern?, What kinds of phones are in question?
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T722i specifications

The Motorola T722i is a notable mobile phone that emerged in the early 2000s, reflecting the era's transition from basic mobile devices to more feature-rich models. This clamshell-style phone became popular for its compact design, robust features, and user-friendly interface.

One of the key characteristics of the T722i is its compact and stylish clamshell design, which not only enhances portability but also protects the keypad when not in use. The device is available in multiple colors, allowing users to express their individuality. The hinge mechanism is sturdy yet smooth, contributing to the overall durability of the phone.

In terms of display, the Motorola T722i features a monochrome screen with a resolution of 128 x 64 pixels. While it may not compare to modern smartphones, the display offers clear visibility for text and basic graphics, which was adequate for its time. Additionally, the internal LCD screen is complemented by an external display, allowing users to see incoming calls and notifications without opening the phone.

The T722i is equipped with various essential features, including predictive text input, a basic calendar, and customizable ringtones. With an impressive battery life, the device can support extended use, making it suitable for users who rely on their phones for communication throughout the day. The talk time and standby time were considered exceptional for the era, providing a reliable experience for on-the-go users.

Connectivity-wise, the Motorola T722i supports GSM networks, which ensures compatibility with many service providers. This capability also paved the way for international roaming, appealing to frequent travelers. The phone supports SMS messaging, allowing users to quickly send and receive text messages, a significant mode of communication in the early 2000s.

Another notable feature is its compatibility with various accessories, including headsets and data cables, enabling users to personalize their experience further. Additionally, the T722i supports a limited selection of downloadable ringtones and wallpapers, giving users a chance to customize their device.

Overall, the Motorola T722i stands as a testament to the early days of mobile technology, blending style, functionality, and reliability. While it may seem basic by today’s standards, it laid the groundwork for the advancements that would come in mobile phones in the following decades.
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