Settings
•Download and install: Check for software updates and install if any are available.
•Last update: View information about the installation of the current software.
•Use software upgrade assistant: Install a tool to install system updates.
Reset
Reset device and network settings. You can also reset your device to its factory defaults.
Reset all settings
You can reset your device to its factory default settings, which resets everything except the security, language, and account settings. Personal data is not affected.
1.From Settings, tap 
General management > Reset > Reset all settings.
2.Tap Reset settings, and confirm when prompted.
Reset network settings
You can reset
1.From Settings, tap 
General management > Reset > Reset network settings.
2.Tap Reset settings, and confirm when prompted.
Reset accessibility settings
You can reset device accessibility settings. Accessibility settings in downloaded apps and your personal data are not affected.
1.From Settings, tap 
General management > Reset > Reset accessibility settings.
2.Tap Reset settings, and confirm when prompted.
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