Millions of Apple users rushed to install iOS 18.4, released on Monday. The update includes eight new emojis and advanced AI features under Apple Intelligence. However, many users quickly noticed a major issue—rapid battery drain.
iOS 18.4: Users Complain About Battery Drain
Shortly after updating, iPhone owners reported severe battery problems. User @OldAppleTech on X called the battery life “absolutely terrible” after installing iOS 18.4.

Another frustrated user wrote, “Before the update, my battery capacity was 87%. After updating, it dropped to 79%. This is weired!” One iPhone owner complained, “My battery drains so fast I have to charge it three times a day!” Another user warned, “Stop updating your iPhone. It’s ruining battery life.”
Why Does This Happen?
Battery drain after an iOS update is common. Apple says this happens because background processes run for a few days after installation. These tasks optimize the system, index data, and recalibrate battery performance. During this time, your battery might drain faster than usual.
Apple advises users to wait before panicking. “If you notice lower battery life after an update, wait a few days and check again,” Apple explains.
How to Fix Battery Drain
If iOS 18.4 is draining your battery, try these steps:
- Restart Your iPhone – A reboot can fix minor issues.
- Check Battery Usage – Go to Settings > Battery to see which apps drain power.
- Disable Background App Refresh – Turn it off in Settings > General.
- Turn Off Unused Features – Disable Bluetooth and location services when not needed.
- Use Low Power Mode – This reduces background activity and saves battery.
Final Thoughts
New iOS updates bring great features but sometimes cause issues. If you see battery drain after updating to iOS 18.4, give it a few days. If the issue persists, try the tips above. Apple may release a minor update soon to fix any problems. Stay tuned!