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US media test: some iPhone radiation exceeds the safe limit iPhone 7 is the worst

via:新浪科技     time:2019/8/22 15:00:42     readed:96


Apple Online Store (China)

In the test, the radiation level of many iPhones exceeded the legal safety limit, and the worst performance was the iPhone 7. ThisMobile phoneThe exposure of RF radiation exceeds the legal limit, which is more than twice the number reported by Apple to US federal regulators.

iPhone 7 test performance

The iPhone X is slightly overrun in some tests, as is the iPhone 8, while the iPhone 8 Plus remains within the legal range. In addition, these iPhones were tested again after Apple provided feedback on the test methods. The adjusted test method "added steps to activate sensors that reduce the power consumption of the phone."

In the post-adjustment test, the reporter activated the relevant sensor with the iPhone. The results show that the iPhone 8's radiation is below the legal safety limit, but the iPhone 7 still does not. Apple objected to the results of the Chicago Tribune and said that the lab tested the iPhone differently than Apple, but did not specify where the problem was in the test. Apple also said that there are problems with the adjusted test methods.

Apple officials refused to be interviewed and asked the Chicago Tribune to submit an interview in writing. Before the article was published, Apple had not responded to the question. Apple then again offered a statement saying the test was inaccurate because "the test setup did not meet the procedures needed to properly evaluate the iPhone."

Apple’s statement said: “All iPhone models, including the iPhone 7, have received all certifications from the US Federal Communications Commission (FCC) and all other countries that sell iPhones. After careful evaluation and subsequent verification of all iPhone models tested in the report , we confirm that we meet the requirements and comply with all applicable radiation regulations and restrictions."

At the same time, the FCC said it would conduct autonomous testing over the next few months. Neil Grace, a spokesman for the FCC, said: "We take any charge about non-compliance with the RF radiation standard and will use the target cell phone to test it to confirm whether it is in compliance with the FCC regulations."

The Chicago Tribune also testedSamsung, Motorola andVivoPhone. Most of these phones also have RF radiation levels that exceed FCC regulations.


iPhone X/8/8 Plus test performance

FCC and smartphone manufacturers will test new phones before they go on the market to ensure they meet RF emissions standards. The Chicago Tribune believes that this is problematic because it only requires a prototype to pass the test, and the mobile phone manufacturer can also choose the test lab.

The test can be done at a distance of 25 mm, but the Chicago Tribune uses the distance chosen by the handset manufacturer. For Apple, this is 5 mm. Another test was conducted at 2 mm to simulate the situation where most users carry their mobile phones.

It is worth noting that the test simulates the worst radiation conditions. Under this condition, the phone runs at full power. Normally, users will not experience such radiation, but this can happen if the phone signal is very poor.

The Chicago Tribune said the test was not intended to rank radiation safety on mobile phones. In addition, only 11 phones were tested. In many cases, only one phone of a model is used for testing. Even so, the newspaper pointed out that it is unclear whether mobile phones found to exceed the radiation limit will cause harm to the human body.

Apple said that users who are worried about radiation can use the hands-free option. For some iPhone models, such as the iPhone 4 and iPhone 4s, Apple recommends placing the phone 10 mm away from the body to ensure that the radiation is below the test level. Apple made similar recommendations for the iPhone 7 when submitting documents to the FCC, but allegedly did not inform the user about the 5 mm distance.

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