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How to Swap Out the iPhone 12 Battery on Your Own
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4 min read
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iPhone 12 battery replacement has become a popular DIY repair option for users looking to extend the life of their devices and restore optimal performance. With the right tools and guidance, users can replace their iPhone 12 battery at home, potentially avoiding Apple's non-genuine part warnings and saving on service costs.

 

Signs Your iPhone 12 Battery Needs to Be Replaced ASAP

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osxdaily.com
Knowing when to replace your iPhone 12 battery is crucial for maintaining optimal device performance. Apple designs iPhone batteries to retain up to 80% of their original capacity after 500 complete charge cycles, which typically occurs within 18-24 months for most users
1
. Signs that your battery may need replacement include:
  • Significantly reduced battery life
  • Unexpected shutdowns or restarts
  • Slower performance, especially after iOS updates
  • Battery health below 80% in Settings > Battery > Battery Health
iOS provides a built-in tool to check battery health, displaying the maximum capacity percentage and performance capability
2
. If your iPhone displays a "Service" message in the Battery Health section, it's a clear indicator that replacement is necessary. Additionally, if your device is running slower than usual or you find yourself charging it multiple times a day, these are strong indicators that it's time for a battery replacement
3
. By addressing battery issues promptly, you can restore your iPhone 12 to its optimal performance and extend its usable lifespan.
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Step-by-Step Replacement Guide to Replacing an iPhone 12 Battery

ifixit.com
ifixit.com
Here's a concise step-by-step plan for replacing the battery in an iPhone 12. This guide outlines the key stages of the process, from preparation to final testing.
  • Backup your iPhone data and disable Find My iPhone
    1
  • Gather necessary tools: replacement battery, adhesive strips, heat gun, screwdrivers, and pry tools
    2
    3
    4
  • Power off the iPhone and remove the two pentalobe screws at the bottom
    2
    5
  • Apply heat to soften the adhesive and carefully lift the screen
    2
    3
  • Disconnect the battery and screen connectors
    2
    3
  • Remove the speaker, SIM module, and Taptic Engine to access the battery
    5
  • Carefully remove the old battery by pulling out the adhesive strips
    3
  • Install the new battery and reattach components in reverse order
    3
    4
  • Reconnect all cables, close the phone, and replace the pentalobe screws
    2
    3
  • Power on the device and test the new battery's functionality
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    5
Remember to work in a clean, well-lit area and handle components with care throughout the process. If you're unsure about any step, consider seeking professional assistance to avoid damaging your device.
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Essential Tools for iPhone 12 Battery Replacement

ifixit.com
ifixit.com
To successfully replace the battery in an iPhone 12, you'll need a specific set of tools. These include a replacement battery, adhesive strips, tweezers, and a hairdryer or heat gun to soften the adhesive
1
2
. Additionally, you'll require specialized screwdrivers such as a P2 pentalobe, Y000, and Phillips 00
3
. A spudger, suction cup or iSclack, and opening picks are essential for safely separating the screen from the case
3
. For precision work, angled tweezers and a standoff driver are recommended
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3
. It's crucial to use high-quality tools to avoid damaging the device during the replacement process. Having isopropyl alcohol on hand can help in case of adhesive issues
3
. Remember, using the correct tools not only facilitates a smoother replacement process but also helps maintain the integrity of your iPhone 12 components.
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DIY vs Professional Battery Replacement: Pros and Cons

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cellbotics.com
When considering iPhone 12 battery replacement, users often weigh the options of DIY versus professional service. Here's a comparison of the pros and cons for each approach: DIY Battery Replacement:
  • Pros:
    • Cost savings on labor fees
      1
    • Convenience of choosing your own time and place
      1
    • Potential learning experience and increased device knowledge
      1
    • Quick solution in emergency situations
      1
  • Cons:
    • Risk of mistakes due to lack of expertise
      1
    • Limited warranty coverage compared to professional services
      1
    • Safety hazards, especially when handling batteries
      1
    • Time-consuming, especially for inexperienced users
      1
Professional Battery Replacement:
  • Pros:
    • Expertise of trained technicians ensures correct installation
      1
    • Comprehensive warranty coverage
      2
    • Proper safety protocols and handling of components
      2
    • Efficient service with minimal downtime
      2
  • Cons:
    • Higher cost due to labor fees
      1
    • Potential inconvenience of scheduling appointments
      1
    • Less hands-on experience for those interested in learning
      2
Ultimately, the choice between DIY and professional battery replacement depends on factors such as technical skills, time availability, budget constraints, and personal comfort level with device repairs
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2
. While DIY can be cost-effective, professional services offer expertise and peace of mind, especially for those less experienced with device repairs.
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Common Mistakes to Avoid During Battery Replacement

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phonedoctors.com
When replacing an iPhone 12 battery, it's crucial to avoid common mistakes that could damage your device or compromise the repair. Here are some key errors to steer clear of during the battery replacement process:
  • Skipping diagnostic checks before replacement
    1
  • Neglecting safety protocols and not using protective gear
    2
  • Misidentifying battery terminals and reversing polarity
    2
  • Rushing the installation process and overlooking important steps
    2
  • Forgetting to disconnect the battery before working on other components
    1
  • Using excessive force when removing adhesive strips or components
    3
  • Failing to properly clean and prepare surfaces for new adhesive
    4
  • Overlooking battery compatibility and using an incorrect replacement
    2
  • Neglecting to register the new battery with the device's system (if required)
    2
  • Attempting the repair without proper tools or technical knowledge
    4
By avoiding these mistakes, you can increase the chances of a successful battery replacement and minimize the risk of damaging your iPhone 12. If you're unsure about your ability to perform the replacement safely, it's best to seek professional assistance.
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Tutorials on How to Make a Quick iPhone Battery Swap (Videos)

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Watch
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Watch

 

Final Considerations for Replacing an iPhone 12 Battery

Replacing an iPhone 12 battery can significantly improve battery life and restore normal battery health. As battery degradation occurs over time, users may notice decreased battery capacity and battery health issues. A replacement battery can bring the device back to its original battery performance, addressing concerns about battery life and phone battery longevity. While the process involves carefully removing the iPhone screen, it's crucial to protect the original screen and reinstall it properly to maintain the device's integrity. Using a quality screen protector after the replacement can help safeguard the display. Remember that while DIY battery replacements are possible, they may affect water resistance and trigger non-genuine part warnings
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. For those uncomfortable with the process, professional battery replacements from Apple or authorized service providers remain a reliable option to ensure optimal battery health and performance
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Related
How can I ensure my new iPhone 12 battery lasts as long as possible
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