iPhone users complain that iOS 18.4 is killing their batteries': It's absolutely terrible.
Most users recently received the iOS 18.4 update from Apple, which comes with new features, chief among them being AI-powered capabilities.
Some users are extremely cautious and never download or install these updates, but others install them right away when they become available.
If you are brave enough, you have undoubtedly noticed that your iPhone's battery is getting worse since the most recent iOS 18.4 update.
You are not alone; many people are constantly complaining about the most recent update and how it appears to be affecting battery life on social media sites like X.
Nevertheless, user @OldAppleTech reported that the update's battery life is "absolutely horrible." iOS 18.4 is "absolutely terrible," according to others. Before the update, the battery was at 87%, then 79% after. It's insane."
Others noted that the iPhone battery drains so quickly that they "charge the phone three times a day."
Finally, another user also commented, "Stop updating iOS; it only reduces battery life."
It's worth noting that it's very common for battery performance to become worse than expected during the first few days after an OS update.
This is due to various calibration issues that require additional power after installing the update.
Software changes can take hours or even days to complete and run in the background, so if you notice your iPhone's battery life is worse now that you've updated to iOS 18.4, wait a few days.
However, if you notice after these two days that your iPhone battery is worse than it was after the update, it's a good idea to check the maximum battery capacity in iOS settings.
When it's time to change your battery, iOS will notify you with a message in the Battery settings area so you're aware.