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Table of contents
ix
Device maintenance
147
Quick optimization
147
Battery
148
Storage
148
Memory card
148
Memory
149
Advanced options
150
Language and input
151
Date and time
153
Troubleshooting
154
Lock screen and security
157
Screen lock types
157
Google Play Protect
158
Find My Mobile
159
Security update
159
Google Play system update
159
Samsung Pass
160
Samsung Blockchain Keystore
160
Install unknown apps
160
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