Let’s face it. We live in an era where our smartphones are more than just devices; they’re practically extensions of ourselves. Particularly, smartphones have revolutionized the way we communicate, work, play, and even think. However, as much as we adore them, devices like iPhones are not invincible. They age, slow down, and more importantly, their batteries degrade.
The iPhone battery is a critical component that powers everything you do on your device. Over time, with continuous charge cycles, the battery’s capacity to hold charge dwindles. It is not a reflection of flawed design or poor quality but a universal characteristic of modern rechargeable batteries.
Before we dive into the telltale signs, it’s worth noting that Apple’s iOS operating system includes a feature that allows users to check the health of the iPhone battery. This feature, found under Settings > Battery > Battery Health, will give you a percentage representation of your battery’s health. If you see anything less than 80%, consider it as the first sign that your battery might be due for a replacement.
But what if your device runs on an older iOS, or you want to look out for more practical signs? Here are some symptoms of a weak or dying iPhone battery.

Unexpected shutdowns
If your iPhone suddenly turns off while its battery level is still above zero, it could be a sign of a worn-out battery. This often happens because the battery can’t provide enough power for the phone to operate normally, causing it to shut down unexpectedly.
Degraded performance
A degraded battery may result in an iPhone running slower than usual. This is due to Apple’s performance management feature, which slows down the device to prevent unexpected shutdowns. If you notice a significant lag in your apps or functionalities, it might be time for a battery check.
See also: How long until an iPhone gets obsolete?
Overheating for no reason
If your iPhone regularly gets hot—especially while charging—it might indicate a battery issue. While it’s normal for a device to warm up during heavy use or charging, regular overheating is not.
Faster battery drain
Are you charging your iPhone more frequently than before? Does the battery percentage dip drastically within a short period? A fast-draining battery is a clear sign of a problem.
Now that you’re aware of the signs, the question arises: what next? The simple answer is to get your iPhone battery replaced. Apple and authorized service centers provide battery replacement services for a fee. However, if your device is covered under warranty, you might be eligible for a free replacement.
Finally, it’s essential to highlight the impact of our constant desire for upgrades on the environment. According to Apple, the average iPhone owner uses their device for three years. However, replacing a worn-out battery can significantly extend this lifespan, resulting in fewer devices being produced and thrown out.
Being able to recognize when your iPhone battery needs replacing can save you from unexpected shutdowns and slow performance. It also contributes to a broader cause by reducing electronic waste. Remember, the key to a long-lasting iPhone lies not just in continuously getting software updates, but also in keeping its battery life acceptable for everyday usage.