内容来源：https://www.engadget.com/2276489/apple-att-network-bug-iphone-18-pro-max/

内容总结：

苹果公司近日确认，部分iPhone 18 Pro Max用户在使用AT&T网络时遇到信号丢失问题。苹果表示，该问题仅影响“少数”AT&T用户，并已发布iOS 27.0.1系统更新及运营商设置更新以预防该问题发生。然而，对于已经出现信号故障的设备，软件更新将无法修复，用户需联系苹果客服或AT&T申请更换手机。受影响设备的状态栏会显示“SOS”标志而非信号格，通话、短信及4G/5G数据服务均无法使用。值得注意的是，iPhone 18 Pro Max是美国市场唯一采用高通基带而非苹果自研基带的机型，但目前尚不清楚这是否与此次故障存在直接关联。苹果建议所有iPhone 18 Pro Max用户尽快前往“设置-通用-软件更新”升级至iOS 27.0.1，并可通过“设置-通用-关于本机”检查运营商设置更新。若手机已完全失去蜂窝信号，则需直接申请换机。

中文翻译：

苹果承认iPhone 18 Pro Max存在AT&T网络漏洞

如果你的手机已经失去信号，就只能换机了。

在收到大量关于iPhone 18 Pro Max网络问题的投诉后，苹果现已确认确实存在问题。该问题似乎仅影响了美国AT&T用户，目前已有iOS更新可供修复。不过，对于已经受影响的用户来说，该更新将无法解决问题。苹果向9to5Mac表示，这些用户需要更换硬件。

苹果对AT&T问题的表态

判断你的手机是否有这个漏洞并不难。如果中招了，你的iPhone 18 Pro Max状态栏会显示“SOS”标志，而不是信号格。通话、短信以及4G或5G数据也将停止工作。好消息是，并非所有使用AT&T的iPhone 18 Pro Max用户都受到了影响。苹果表示，该问题仅影响“少量”用户，并向9to5Mac提供了以下声明：

“我们发现了一个影响AT&T网络上少量iPhone 18 Pro Max用户的问题，可能导致设备失去服务并无法拨打电话。我们已于本周早些时候发布iOS 27.0.1，强烈建议所有iPhone 18 Pro Max用户立即更新，同时我们今天也在推送运营商设置更新。这些更新旨在帮助防止此问题的发生。”

有趣的是，iPhone 18 Pro Max是美国市场唯一一款使用高通调制解调器而非苹果自研基带的机型——但目前尚不清楚这是否与该漏洞有直接关联。如果你已经勾选购买了附带AT&T SIM卡的iPhone 18 Pro Max，以下是应对方法。首先，尽快更新到iOS 27.0.1。只需前往“设置”>“通用”>“软件更新”，查看最新版本即可。

如果你已经更新过了，也值得检查一下是否安装了最新的运营商设置。同样在“设置”中，进入“通用”并点击“关于本机”以触发更新。如果你没有看到关于运营商设置更新的弹窗，那很可能你已经是最新版本了。遗憾的是，如果你的iPhone已经失去了蜂窝信号，软件更新或恢复都无法解决问题。你应该联系Apple支持或AT&T申请更换手机。

英文来源：

Apple acknowledges AT&T network bug on iPhone 18 Pro Max
You'll have to get your phone replaced if it has already lost its signal.
Following a number of complaints about network issues affecting iPhone 18 Pro Max devices, Apple has now confirmed that there is indeed a problem. It appears that the issue has only affected AT&T users in the US, and an iOS update is already available to fix it. That said, the update won't work for those who have already been affected by the problem. Those will need a hardware replacement, Apple told 9to5Mac.
What Apple says about the AT&T issue
It's not hard to tell if your phone has the bug. If that's the case, your iPhone 18 Pro Max will show the "SOS" symbol in the status bar instead of signal bars. Calls, text messages and data over 4G or 5G will also stop working. The good news is that not every iPhone 18 Pro Max owner using AT&T has been affected. Apple says it only affects a "small number" of users, and gave 9to5Mac the following statement:
"We have identified an issue affecting a small number of iPhone 18 Pro Max users on the AT&T network that may cause a device to lose service and be unable to make calls. We released iOS 27.0.1 earlier this week and strongly encourage all iPhone 18 Pro Max users to update now, and are also issuing a carrier settings update today. These updates together are meant to help prevent this issue from occurring."
Interestingly, the iPhone 18 Pro Max is the only model sold in the US that uses a Qualcomm modem instead of Apple's own — but it's unclear whether there's any direct connection between that and the bug. If you've checked the boxes to get an iPhone 18 Pro Max with an AT&T SIM card, here's what to do. First, update to iOS 27.0.1 as soon as possible. Just go to Settings > General > Software Update and look for the latest version.
If you've already updated, it's also worth checking to see if you have the latest carrier settings. Also in Settings, go to General and tap About to trigger the update. If you don't see a pop-up about a carrier settings update, you probably already have the latest version. Unfortunately, if your iPhone has already lost its cellular signal, a software update or restore won't work. You should contact Apple Support or AT&T to request a phone replacement instead.