It’s that time of year again. Apple is about to release iOS 18, which promises a host of new features and improvements for iPhones worldwide. It’s Apple’s biggest software update of the year and the company is expected to release it today – Monday, September 16.

Based on previous releases, the update will likely be released around 10:00 am Pacific Time/1:00 pm Eastern Time. To give iPhone users worldwide an idea of ​​when iOS 18 should be available as an over-the-air update, we’ve compiled a list of time zone conversions for several countries below. This list is not exhaustive, so please check the exact time for your specific location and keep in mind that there can always be delays as Apple prepares its servers for the rollout.

Be prepared for waiting times

When iOS 18 and iPadOS 18 become available as an over-the-air update, make sure your device is fully charged before starting the process over Wi-Fi as it may take some time. To check if the update is available, go to Settings ➝ General ➝ Software updateand wait a moment for your device to contact Apple’s servers. If you’re not in a hurry, you can wait for iOS 18 to roll out to your iPhone the next time you connect it to your computer.

On that note, a word of warning: During the initial rollout of major software updates like iOS 18, Apple users may experience slower download speeds and performance degradation when attempting to update their devices. This is mainly due to the high load on Apple servers as millions of users worldwide attempt to download the update simultaneously.

The increase in traffic can overwhelm network capacity and cause delays in downloading or installing the update. To avoid these potential issues, we recommend waiting a day or two before installing the update to allow server congestion to subside and ensure a smoother upgrade experience.