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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
Table of contents
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