Rexx
Guest
Feb 16, 2026
5:45 AM
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I used to repair these flip phones - they're classics of the 3G era. The most common reason they won't turn on is an issue with the PMIC or battery circuit. The manual has checkpoints for voltage measurements and a diagram of the case and cables to help you avoid breaking anything. I recommend reading the user manual Samsung SGH-Z650i on Manual Machine. It provides step-by-step instructions on how to unscrew the cover, check the battery, contacts, and keyboard. If you can't do it yourself, it's better not to risk it and take it to a service center. Is this your phone or your parents'? I had a similar model, and when I turned it on and saw the avatar, I almost cried.
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