Samsung SM-T638U User Manual page 3

Table of Contents
99 Connections
100 Wi-Fi
102 Bluetooth
103 NFC and contactless payments
105 Data saver (Mobile network
enabled models)
105 Mobile data only apps (Mobile
network enabled models)
106 Mobile Hotspot (Mobile network
enabled models)
106 More connection settings
108 Connected devices
109 Modes and Routines
109 Using modes
109 Using routines
110 Sounds and vibration
111 Sound quality and effects
111 Separate app sound
112 Notifications
112 Display
113 Wallpaper and style
113 Home screen
113 Lock screen
114 Smart Lock
114 Security and privacy
115 Face recognition
117 Fingerprint recognition
120 Samsung Pass
122 Secure Folder
125 Secure Wi-Fi
126 Location
126 Safety and emergency
127 Accounts and backup
128 Users
129 Samsung Cloud
130 Google
130 Advanced features
131 Motions and gestures
132 Dual Messenger
133 Digital Wellbeing and parental
controls
133 Battery and device care
133 Optimizing your device
134 Battery
134 Storage
134 Memory
134 Device protection
135 Auto optimization
135 Software update
135 Diagnostics
135 Maintenance mode
135 Apps
136 General management
137 Accessibility
138 Software update
138 Remote support
139 About tablet
Usage notices
141 Precautions for using the device
143 Notes on package contents and
accessories
144 Maintaining water and dust resistance
145 Device overheating situations and
solutions
Appendix
149 Troubleshooting
3