[Galaxy Ace S5830 Android Development] majedev:
Ahha, holding the menu and home did work for me. I'll try to dig around and see what I can get (starting with framework-res.apk).

By the way, there are many "removePreference" inside my Settings.apk:

com\android\settings\AccessibilitySettings.smali(154): invoke-virtual {v7, v8}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\AccessibilitySettings.smali(1133): invoke-virtual {v10, v11}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\ApplicationSettings.smali(435): invoke-virtual {v2, v3}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\ApplicationSettings.smali(464): invoke-virtual {v2, v0}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\DeviceInfoSettings.smali(300): .method private removePreferenceIfPropertyMissing(Landroid/preference/PreferenceGroup;Ljava/lang/String;Ljava/lang/String;)V
com\android\settings\DeviceInfoSettings.smali(326): invoke-virtual {p1, v1}, Landroid/preference/PreferenceGroup;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\DeviceInfoSettings.smali(541): invoke-direct {p0, v1, v2, v3}, Lcom/android/settings/DeviceInfoSettings;->removePreferenceIfPropertyMissing(Landroid/preference/PreferenceGroup;Ljava/lang/String;Ljava/lang/String;)V
com\android\settings\DeviceInfoSettings.smali(554): invoke-virtual {v1, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\LanguageSettings.smali(659): invoke-virtual {v1, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\LanguageSettings.smali(694): invoke-virtual {v1, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\PrivacySettings.smali(386): invoke-virtual {v0, v1}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\Settings.smali(111): invoke-virtual {v2, v1}, Landroid/preference/PreferenceGroup;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\SoundSettings.smali(578): invoke-virtual {v4, v5}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\SoundSettings.smali(813): invoke-virtual {v4, v5}, Landroid/preference/PreferenceGroup;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\TetherSettings.smali(812): invoke-virtual {v1, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\TetherSettings.smali(845): invoke-virtual {v1, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\TetherSettings.smali(874): invoke-virtual {v1, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\TetherSettings.smali(883): invoke-virtual {v1, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\Utils.smali(166): invoke-virtual {p1, v5}, Landroid/preference/PreferenceGroup;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\VoiceInputOutputSettings.smali(88): invoke-direct {p0, v5}, Lcom/android/settings/VoiceInputOutputSettings;->removePreference(Landroid/preference/Preference;)V
com\android\settings\VoiceInputOutputSettings.smali(93): invoke-direct {p0, v5}, Lcom/android/settings/VoiceInputOutputSettings;->removePreference(Landroid/preference/Preference;)V
com\android\settings\VoiceInputOutputSettings.smali(98): invoke-direct {p0, v5}, Lcom/android/settings/VoiceInputOutputSettings;->removePreference(Landroid/preference/Preference;)V
com\android\settings\VoiceInputOutputSettings.smali(113): invoke-direct {p0, v5}, Lcom/android/settings/VoiceInputOutputSettings;->removePreference(Landroid/preference/Preference;)V
com\android\settings\VoiceInputOutputSettings.smali(303): .method private removePreference(Landroid/preference/Preference;)V
com\android\settings\VoiceInputOutputSettings.smali(314): invoke-virtual {v0, p1}, Landroid/preference/PreferenceGroup;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\VoiceInputOutputSettings.smali(460): invoke-virtual {v11, v12}, Landroid/preference/PreferenceGroup;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\WirelessSettings.smali(304): invoke-virtual {v5, v6}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\bluetooth\BluetoothSettings.smali(1769): invoke-virtual {v1, v0}, Lcom/android/settings/ProgressCategory;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\deviceinfo\Status.smali(311): invoke-virtual {v3, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\deviceinfo\Status.smali(865): invoke-virtual {v4, v5}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\deviceinfo\Status.smali(991): invoke-virtual {v4, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\deviceinfo\Status.smali(1009): invoke-virtual {v4, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\deviceinfo\Status.smali(1170): invoke-virtual {v4, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\deviceinfo\Status.smali(1188): invoke-virtual {v4, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\deviceinfo\Status.smali(1206): invoke-virtual {v4, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\deviceinfo\Status.smali(1224): invoke-virtual {v4, v2}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\vpn\VpnSettings$17.smali(100): invoke-virtual {v2, v1}, Landroid/preference/PreferenceCategory;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\wifi\AccessPointListDialog.smali(1201): invoke-virtual {v3, v4}, Lcom/android/settings/ProgressCategory;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\wifi\WifiSettings.smali(1610): invoke-virtual {v2, v3}, Lcom/android/settings/ProgressCategory;->removePreference(Landroid/preference/Preference;)Z
com\android\settings\wifi\WifiSettings.smali(1985): invoke-virtual {v2, v3}, Lcom/android/settings/ProgressCategory;->removePreference(Landroid/preference/Preference;)Z