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  1. Copilot 答案
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    To replace the battery in an iPhone 7, follow these steps:
    1. Discharge the iPhone battery below 25%.
    2. Heat the lower edge of the iPhone to soften the adhesive.
    3. Attach a suction cup to the lower half of the display assembly.
    4. Pull up on the suction cup to create a small gap between the display assembly and the rear case.
    5. Insert a flat tool to separate the adhesive and remove the display assembly.
    6. Disconnect the battery connector and remove the battery.
      The cost of replacing an iPhone 7 battery usually ranges from $70 to $120.