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Samsung Galaxy S 4G는 4-인치 AMOLED 터치 스크린 화면과 1GHz 프로세서를 장착한 Android 2.2-기반 스마트폰입니다.

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Lost passcode, it will not do a factory reset

Bought used, no passcode, will not do a factory reset, keeps coming up with a passcode screen

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Taken from source, user edwinpena:

How do I factory reset my Samsung Galaxy S?

Back up all necessary data on the internal memory.

If the handset is locked, frozen, or unresponsive, you can hard reset it using the hardware keys instead of the menu.

A hard reset restores the original factory settings and erases content, including downloaded ringtones, images, programs, and contacts stored in the internal memory. This feature allows for resetting of sound profiles, display settings, and phone or memory card settings.

To perform a hard reset using the hardware keys, follow these steps:

Save any open files, and back up all necessary data on the internal memory if the device is responsive and can synchronize files. See: Prepare for a master reset and back up data on Android

Turn off the phone.

Note: If the phone is unresponsive and does not turn off, remove the battery and then re-insert it.

Hold down the Volume Up, Volume Down, and Power keys simultaneously.

When the Samsung log appears, continue to hold the keys until the master reset menu appears.

Press the Volume Down key to select Delete all user data when the Android master reset menu appears.

Press the Power key to confirm your selection.

Press the Volume Down key to select Yes – delete all user data.

Press the Power key to confirm your selection.

Press the Power key to select reboot system now.

DOC-14065

Source: https://support.t-mobile.com/docs/DOC-24...

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