
Saturday, July 3, 2010
Apple admits iPhone 4 reception issues, says fix is coming
(Mashable) -- After initially dismissing the reports about the iPhone 4 antenna reception issue, Apple has officially admitted it exists, promising a software fix in a couple of weeks. There's a catch, though. Apple's promised fix may not be good news for users experiencing the problem. Apple claims it has erroneously calculated the formula which displays signal bars on the iPhone, and therefore the iPhone has been showing too many bars in areas with weak signal strength.
Here's how Apple explains it:
"Users observing a drop of several bars when they grip their iPhone in a certain way are most likely in an area with very weak signal strength, but they don't know it because we are erroneously displaying 4 or 5 bars. Their big drop in bars is because their high bars were never real in the first place."
Unfortunately, this seems like Apple is only acknowledging one part of the problem. Anandtech's in-depth analysis showed that the signal drop when you grip the iPhone 4 by its lower-right side is very real.
Therefore, Apple's fix probably won't fix that part -- arguably the biggest part -- of the problem, and will merely make the iPhone 4 display fewer bars in weak signal areas.
Interestingly enough, Apple claims the miscalculation was present "since the original iPhone," so the fix will apply to older generation iPhones as well.
Here's Apple's official announcement:
Dear iPhone 4 Users,
The iPhone 4 has been the most successful product launch in Apple's history. It has been judged by reviewers around the world to be the best smartphone ever, and users have told us that they love it. So we were surprised when we read reports of reception problems, and we immediately began investigating them. Here is what we have learned.
To start with, gripping almost any mobile phone in certain ways will reduce its reception by one or more bars. This is true of iPhone 4, iPhone 3GS, as well as many Droid, Nokia and RIM phones. But some users have reported that iPhone 4 can drop four or five bars when tightly held in a way which covers the black strip in the lower left corner of the metal band. This is a far bigger drop than normal, and as a result some have accused the iPhone 4 of having a faulty antenna design.
At the same time, we continue to read articles and receive hundreds of emails from users saying that iPhone 4 reception is better than the iPhone 3GS. They are delighted. This matches our own experience and testing. What can explain all of this?
We have discovered the cause of this dramatic drop in bars, and it is both simple and surprising.
Upon investigation, we were stunned to find that the formula we use to calculate how many bars of signal strength to display is totally wrong. Our formula, in many instances, mistakenly displays two more bars than it should for a given signal strength. For example, we sometimes display four bars when we should be displaying as few as two bars. Users observing a drop of several bars when they grip their iPhone in a certain way are most likely in an area with very weak signal strength, but they don't know it because we are erroneously displaying four or five bars. Their big drop in bars is because their high bars were never real in the first place.
To fix this, we are adopting AT&T's recently recommended formula for calculating how many bars to display for a given signal strength. The real signal strength remains the same, but the iPhone's bars will report it far more accurately, providing users a much better indication of the reception they will get in a given area. We are also making bars one, two and three a bit taller so they will be easier to see.
We will issue a free software update within a few weeks that incorporates the corrected formula. Since this mistake has been present since the original iPhone, this software update will also be available for the iPhone 3GS and iPhone 3G.
We have gone back to our labs and retested everything, and the results are the same- the iPhone 4's wireless performance is the best we have ever shipped. For the vast majority of users who have not been troubled by this issue, this software update will only make your bars more accurate. For those who have had concerns, we apologize for any anxiety we may have caused.
As a reminder, if you are not fully satisfied, you can return your undamaged iPhone to any Apple Retail Store or the online Apple Store within 30 days of purchase for a full refund.
We hope you love the iPhone 4 as much as we do.
Thank you for your patience and support.
Apple
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Monday, June 7, 2010
Study finds that sexsomnia is common in sleep center patients
WESTCHESTER, IL — Sexsomnia was reported by almost eight percent of patients at a sleep disorders center and was more common in men than women, according to a research abstract that will be presented Monday, June 7, 2010, in San Antonio, Texas, at SLEEP 2010, the 24th annual meeting of the Associated Professional Sleep Societies LLC.Results indicate that 7.6 percent of patients (63 of 832) at a sleep disorders center reported that they had initiated or engaged in sexual activity with a bed partner while asleep. The prevalence of reported sexsomnia was nearly three times higher in men (11 percent) than in women (four percent).
“There have been no previous studies of how frequently sexsomnia occurs,” said co-investigator Sharon A. Chung, PhD, Sleep Research Laboratory staff scientist in the department of psychiatry at the University Health Network in Toronto, Canada. “While our finding of eight percent of people reporting sexsomnia seems really a high number, it should be stressed that we only studied patients referred to a sleep clinic. So, we would expect the numbers to be much lower in the general population.”
The study involved a retrospective chart review of 832 consecutive patients who were evaluated for a suspected sleep disorder; the sample consisted of 428 men and 404 women. Patients completed a questionnaire about sleep disorders symptoms, behaviors during sleep, sleepiness, fatigue and mood.
Symptoms of insomnia, fatigue and depressed mood were similar between people reporting sexsomnia and other patients at the sleep disorders center. Both groups also had similar rates of smoking and caffeine consumption. However, people who reported sexsomnia were twice as likely as other sleep center patients to admit using illicit drugs (15.9 percent vs. 7.7 percent).
Although sexsomnia was common, patients rarely mentioned the problem to their doctor. Chung noted that only four of 832 patients expressed a complaint about sexsomnia during a consultation with a sleep specialist.
“It seems that patients generally don’t discuss this with their doctors,” she said.
The International Classification of Sleep Disorders, Second Edition, published by the American Academy of Sleep Medicine in 2005, notes that sexsomnia appears to occur predominantly during confusional arousals and may occur during an episode of sleepwalking. These are two of the disorders that are classified as “parasomnias,” which involve undesirable behaviors that occur while falling asleep, during sleep or while waking up.
A literature review in the June 2007 issue of the journal Sleep concluded that a broad range of sleep-related disorders are associated with abnormal sexual behaviors and experiences.
The SLEEP 2010 abstract supplement is available for download on the website of the journal Sleep at http://www.journalsleep.org/ViewAbstractSupplement.aspx.
A joint venture of the American Academy of Sleep Medicine and the Sleep Research Society, the annual SLEEP meeting brings together an international body of more than 5,000 leading clinicians and scientists in the fields of sleep medicine and sleep research. At SLEEP 2010 more than 1,100 research abstract presentations will showcase new findings that contribute to the understanding of sleep and the effective diagnosis and treatment of sleep disorders such as insomnia, narcolepsy and sleep apnea.