Repairs

iPhone Battery And Performance

A new official release from Apple explains the reasons for devices being slowed down. You can find the full article here.

In summary, users may notice effects such as:

  1. Longer app launch times
  2. Lower frame rates while scrolling
  3. Backlight dimming (which can be overridden in Control Center)
  4. Lower speaker volume by up to -3dB
  5. Gradual frame rate reductions in some apps
  6. During the most extreme cases, the camera flash will be disabled as visible in the camera UI
  7. Apps refreshing in background may require reloading upon launch

However there are key areas that are not impacted by this power management including:

  1. Cellular call quality and networking throughput performance
  2. Captured photo and video quality
  3. GPS performance
  4. Location accuracy
  5. Sensors like gyroscope, accelerometer, barometer
  6. Apple Pay

So What is a lithium-ion battery?

Lithium-ion batteries are type of rechargeable battery found in most mobile phones and devices such as laptops, iPads and bike lights. It is the iPhone battery of choice. They are a popular choice because they are light weight, compact in size and charge quickly. On top of this they hold their charge and only lose 5 percent of charge per month. They also handle thousands of charge cycles without any memory effect(damage caused by not fully discharging). Lithium-ion batteries aren’t without their faults however. They start degrading as soon as they leave the factory and really only have a life expectancy of 2 or 3 years. That said, they do go on far longer as iPhone users will acknowledge. They don’t like extremes of temperatures though. If you’ve ever left your iPhone on a sunny window ledge and come back to find its powered itself off, then that’ll be the battery calling time out.