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How much evidence is there that hand-held mobile phones might be harmful?

Briefly, there is not enough evidence to know for sure, either way; however, research efforts are on-going.

The existing scientific evidence is conflicting and many of the studies that have been done to date have suffered from flaws in their research methods. Animal experiments investigating the effects of RF exposures characteristic of mobile phones have yielded conflicting results. A few animal studies, however, have suggested that low levels of RF could accelerate the development of cancer in laboratory animals. In one study, mice genetically altered to be predisposed to developing one type of cancer developed more than twice as many such cancers when they were exposed to RF energy compared to controls. There is much uncertainty among scientists about whether results obtained from animal studies apply to the use of mobile phones. First, it is uncertain how to apply the results obtained in rats and mice to humans. Second, many of the studies that showed increased tumor development used animals that had already been treated with cancer-causing chemicals, and other studies exposed the animals to the RF virtually continuously—up to 22 hours per day.

For the past five years in the United States, the mobile phone industry has supported research into the safety of mobile phones. This research has resulted in two findings in particular that merit additional study:

In a hospital-based, case-control study, researchers looked for an association between mobile phone use and either glioma (a type of brain cancer) or acoustic neuroma (a benign tumor of the nerve sheath). No statistically significant association was found between mobile phone use and acoustic neuroma. There was also no association between mobile phone use and gliomas when all types of types of gliomas were considered together. It should be noted that the average length of mobile phone exposure in this study was less than three years.

When 20 types of glioma were considered separately, however, an association was found between mobile phone use and one rare type of glioma, neuroepithelliomatous tumors. It is possible with multiple comparisons of the same sample that this association occurred by chance. Moreover, the risk did not increase with how often the mobile phone was used, or the length of the calls. In fact, the risk actually decreased with cumulative hours of mobile phone use. Most cancer causing agents increase risk with increased exposure. An on- going study of brain cancers by the National Cancer Institute is expected to bear on the accuracy and repeatability of these results.

1. Researchers conducted a large battery of laboratory tests to assess the effects of exposure to mobile phone RF on genetic material. These included tests for several kinds of abnormalities, including mutations, chromosomal aberrations, DNA strand breaks, and structural changes in the genetic material of blood cells called lymphocytes. None of the tests showed any effect of the RF except for the micronucleus assay, which detects structural effects on the genetic material. The cells in this assay showed changes after exposure to simulated cell phone radiation, but only after 24 hours of exposure. It is possible that exposing the test cells to radiation for this long resulted in heating. Since this assay is known to be sensitive to heating, heat alone could have caused the abnormalities to occur. The data already in the literature on the response of the micronucleus assay to RF are conflicting. Thus, follow-up research is necessary.

2. FDA is currently working with government, industry, and academic groups to ensure the proper follow-up to these industry-funded research findings. Collaboration with the Cellular Telecommunications Industry Association (CTIA) in particular is expected to lead to FDA providing research recommendations and scientific oversight of new

CTIA-funded research based on such recommendations. Safet y

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Contents Usuário do Manual Limited Warranty Statement Driver Safety Tips Page Page Page Subject Introduction Before You Start Contents MiniBrowser 110 Using the Battery Pack Installing the BatteryRemoving the Battery Battery Charge Level Using the Desktop ChargerCaring for the Battery Phone componentsFollowing shows key components of your mobile phone Phone Overview Soft KeysOnscreen Icons Press once to enter numbersInput mode Examples Using T9 Text InputChanging Letter Case Examples Using ABC Multi-tap Text Input Using the Next KeyFully extend the antenna for the best performance Enter the phone number, with area code if neededCorrecting Dialing Mistakes Call Waiting Press to redial the last number in call historyPower Save Mode Speed Dialing see Making a call from Phone Book on Saving Numbers in Your Personal Phone BookHome, Office, Mobile, Pager Data /Fax and E-mail using Press Find NameConfirmation prompt Saved! Thanks! displays on the phone Select the number you want by using , then press PressingTwo-Touch Speed Dialing This feature enables Dialing from a Memory ListDialing from a Memory Location Press Time PauseMobile, Pager, Data / Fax or E-mail using Press to go through the list of menu features Sound MenuRing Sound Menu Press Ring SoundRing Type Menu Ring & Vib Vol. MenuKey Tone Menu Key Volume Menu Ear Volume MenuEscalating Vol. Menu Alert tone notifies the user when the call is connected Press BacklightDisplay Menu Press one time Backlight Menu Press one time Press Contrast Press ThemePress Language Set English/ Spanish with or Contrast Menu Press one timePress Data Setting and then Data/Fax Press VersionPress My Phone # Version Menu Press one timeDate Baud Auto AnswerData Baud Menu Press two times Select an option and press Soft KeyPress One-Touch Press Voice PrivacyPress Audio AGC System Sel Set NAMAuto NAM Force CallTTY Mode Serving SysServing Sys Menu Press three times Emergency # New Lock Code New Lock Code Menu Press four timesFind Entry PIM Press Find EntryTo find phone numbers you have stored in the Phone Book Select the desired phone number type using Find Name PIMAdd Entry PIM Press Add EntryFind Email PIM Press Find EmailSelect Call HISTORY, Outgoing Select Call HISTORY, IncomingSelect Call HISTORY, Missed If you want to see the calender, press in standby mode Scheduler PIM Press two timesView Daily PIM Select SCHEDULER, Add EventSelect SCHEDULER, View Daily Erase Old PIM Select SCHEDULER, View AllSelect SCHEDULER, Erase All Select SCHEDULER, Erase OldWake UP PIM Press three times Game PIM Press four timesComanche PIM Press four times By destroying the building at the end of the stageMoves to selected menus screen Moves Comanche one tile up. Moves Comanche one tile downSwitches between lowercase and uppercase characters Input name completedHIT Volume and Backlight Setting PIM Press four timesCalculator PIM Press five times Types of Menu New Message AlertNumber by pressing during a message check Voice Send MessageOut of Memory Warning Menu Select Send MsgWhen all fields are entered, press To send the message Inbox Erase Delete the selected messageOutbox Allows you to retransmit the selected messageErase Msgs Erase InboxErase Outbox Erase AllSetting Mute During a call Menu Memo During a call MenuKey Tone During a call Menu Voice Privacy During a call MenuBrowser Start Browser MsgTo start the MiniBrowser Accessing the MiniBrowser OverviewNavigating through the Browser Navigation keysWill also move the cursor Press Side Keys to move up and down a whole screenEntering Text, Numbers, or Symbols Using BookmarksView Browser Menu Soft KeysTo create a Bookmark Finding a BookmarkStandard battery and Extended battery are available Travel ChargerDesktop Charger Hands-Free Car kit Installed Cigarette Lighter ChargerHands-Free Car Kit Portable Data Cable Kit122 Safety Information Exposure to Radio Frequency SignalEfficient Phone Operation Normal Position Tips on Efficient OperationFor Vehicles Equipped with an Air Bag BatteriesFDA Consumer Update Other Medical DevicesVehicles Posted Facilities128 129 130 131 132