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蘋果對於電池的新聞稿

前幾天提到 Apple 在新版 iOS 上搞出的電池問題:「iPhone 換電池恢復效能的事情傳到 Geekbench 後...」,結果看起來是 PR 部門整個加班處理 XDDD

台灣版的公告在「致廣大顧客關於 iPhone 電池與效能的說明」這邊可以看到,英文版的則是在「A Message to Our Customers about iPhone Batteries and Performance」這邊。

前面講的都是大家都已經知道的事情了,重點在後續的部份:

  • Apple 為需要更換電池的 iPhone 6 或後續機種使用者,降低更換已過保固期的 iPhone 電池價格,從 NT$2,590 降為 NT$890,降幅為 NT$1,700。自 2018 年 1 月底至 12 月,全球同步進行。詳細優惠資訊將在近期於 apple.com/tw 公布。
  • 在 2018 年初,我們將發布一項 iOS 軟體更新,其中的新功能可為使用者更清楚顯示 iPhone 電池的健康狀態,讓他們可以自己看到電池的狀態是否影響效能。
  • Apple is reducing the price of an out-of-warranty iPhone battery replacement by $50 — from $79 to $29 — for anyone with an iPhone 6 or later whose battery needs to be replaced, starting in late January and available worldwide through December 2018. Details will be provided soon on apple.com.
  • Early in 2018, we will issue an iOS software update with new features that give users more visibility into the health of their iPhone’s battery, so they can see for themselves if its condition is affecting performance.

所以總算是能在 iPhone 上面直接看到電池的情況了...

iPhone 換電池恢復效能的事情傳到 Geekbench 後...

在「iPhone 的電池與效能」這篇提到了 iPhone 換電池可以恢復效能,結果 Geekbench (也就是原來在 Reddit 上抱怨的人用的測速軟體) 的 John Poole 從 Geekbench 的回報資料庫裡分析了資料,發現了特別的現象後寫下這篇文章 (於是後來引發一連串報導,以及 Apple 的 PR 事件):「iPhone Performance and Battery Age」。

他先拿 iPhone 6S 分析,這看起來就不太妙:

再拿 iPhone 7 的資料分析,就更確定不妙:

可以看到 iOS 的 10.2.1 與 11.2.0 有奇怪的效能集中區。

後續蘋果也確認會刻意降速:「Apple addresses why people are saying their iPhones with older batteries are running ‘slower’」。

然後最新的發展就不太意外了,開始要打架了:「Days after iPhone battery fiasco, lawsuits against Apple begin to mount」。

接下來是耶誕假期,應該要等明年才會有新消息了...

iPhone 的電池與效能

Hacker News 上看到 Reddit 上的這則說明:「PSA: iPhone slow? Try replacing your battery!」。

他提到他的 iPhone 6S 很慢,本來以為是 iOS 11 導致的,結果發現他弟弟 (或是哥哥?) 的 iPhone 6 也是跑 iOS 11,但是快很多... 所以他就試著研究,最後決定換電池:

My iPhone 6S has been very slow these past few weeks, and even after updating multiple times, it was still slow. Couldn’t figure out why, but just thought that iOS 11 was still awful to me. Then I used my brother’s iPhone 6 Plus and his was... faster than mine? This is when I knew something was wrong. So, I did some research, and decided to replace my battery.

結果發現換電池後速度就上來了,上面這張是換電池之前,下面那張是換電池之後:

所以是在電力不足的情況下會降速?

iOS 上測試的軟體是 Geekbench 4,而官方也有給參考值 (Geekbench 的),在 iOS Benchmarks - Geekbench Browser 可以參考。如果在吃滿電、重開機,沒有背景的情況下還是很慢的話,有機會是類似的問題?

解鎖 iPhone 的 Diper ID...

Twitter 上看到 Diper ID 這個糟糕的東西:

查了資料,操作方式可以從這個影片看到:

這明顯有資安問題啊 XDDD

iOS 11 的無線網路與藍芽關假的讓 EFF 不爽...

這次 iOS 11 的無線網路與藍芽需要到 Settings (設定) 裡面才能有效關掉的設計,讓 EFF 不爽寫了一篇文章:「iOS 11’s Misleading “Off-ish” Setting for Bluetooth and Wi-Fi is Bad for User Security」。

On an iPhone, users might instinctively swipe up to open Control Center and toggle Wi-Fi and Bluetooth off from the quick settings. Each icon switches from blue to gray, leading a user to reasonably believe they have been turned off—in other words, fully disabled. In iOS 10, that was true. However, in iOS 11, the same setting change no longer actually turns Wi-Fi or Bluetooth “off.”

不過藍芽的洞真的不少,儘量避免吧... +_+

加州的手機防竊提案讓失竊率下降不少...

2013 的時候提過「加州的手機防竊提案...」,後來在 2015 年生效:

In a press release sent to reporters on Thursday, George Gascón said that since the law went into effect on July 1, 2015[,]

在兩大陣營都有類似的功能:

Such a kill switch has become standard in all iPhones ("Activation Lock") and Android phones ("Device Protection") since 2015.

而執行到現在已經兩年了,手機的失竊率下降不少:「San Francisco DA: Anti-theft law results in huge drop in stolen phones」。

[S]martphone-related robberies have fallen 22 percent from 2015 to 2016. When measured from the peak in 2013, "overall robberies involving smartphones have declined an astonishing 50 percent."

變成要找人殺肉才能處理,增加被竊後的處理難度與成本...

Uber 戰火蔓延到 Unroll

最近 Uber 的 CEO 被 Tim Cook 叫去喝咖啡的事情被報導出來:「Uber’s C.E.O. Plays With Fire」,裡面提到了 Uber 試著要「辨別」使用者的 iPhone,而這違反蘋果的政策:

To halt the activity, Uber engineers assigned a persistent identity to iPhones with a small piece of code, a practice called “fingerprinting.” Uber could then identify an iPhone and prevent itself from being fooled even after the device was erased of its contents.

There was one problem: Fingerprinting iPhones broke Apple’s rules. Mr. Cook believed that wiping an iPhone should ensure that no trace of the owner’s identity remained on the device.

而 Uber 的搞法是針對蘋果總部所在地點屏蔽這個功能:

So Mr. Kalanick told his engineers to “geofence” Apple’s headquarters in Cupertino, Calif., a way to digitally identify people reviewing Uber’s software in a specific location. Uber would then obfuscate its code for people within that geofenced area, essentially drawing a digital lasso around those it wanted to keep in the dark. Apple employees at its headquarters were unable to see Uber’s fingerprinting.

然後被蘋果工程師抓到,於是 Tim Cook 把人叫來喝咖啡:

The ruse did not last. Apple engineers outside of Cupertino caught on to Uber’s methods, prompting Mr. Cook to call Mr. Kalanick to his office.

另外提到了 Uber 從 Unroll.me 買來 Lyft 的帳單資料當作分析:

Using an email digest service it owns named Unroll.me, Slice collected its customers’ emailed Lyft receipts from their inboxes and sold the anonymized data to Uber. Uber used the data as a proxy for the health of Lyft’s business. (Lyft, too, operates a competitive intelligence team.)

而更精彩的在 Hacker News 上的這串爆了不少料,提到 Unroll 會把所有信件掃下來,丟到 S3 上面:

I worked for a company that nearly acquired unroll.me. At the time, which was over three years ago, they had kept a copy of every single email of yours that you sent or received while a part of their service. Those emails were kept in a series of poorly secured S3 buckets. A large part of Slice buying unroll.me was for access to those email archives. Specifically, they wanted to look for keyword trends and for receipts from online purchases.

The founders of unroll.me were pretty dishonest, which is a large part of why the company I worked for declined to purchase the company. As an example, one of the problems was how the founders had valued and then diluted equity shares that employees held. To make a long story short, there weren't any circumstances in which employees who held options or an equity stake would see any money.

I hope you weren't emailed any legal documents or passwords written in the clear.

而在 FAQ 的「If I delete my Unroll.Me account, what will happen to all of my previously rolled up emails?」裡則是說我們沒有存你的信件:

這爆米花要多買一些了...

iOS 透過無線網路的 RCE...

在「About the security content of iOS 10.3.1」這邊的說明:

Available for: iPhone 5 and later, iPad 4th generation and later, iPod touch 6th generation and later
Impact: An attacker within range may be able to execute arbitrary code on the Wi-Fi chip
Description: A stack buffer overflow was addressed through improved input validation.
CVE-2017-6975: Gal Beniamini of Google Project Zero

這描述看起來就不太妙...

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