Part 1. Set Preference Settings
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Step 1: Connect Your Device via USB Step 2: Specific Device Usage Condition
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Step 3: Set the apps not to Scan Step 4: Choose Backup Option  
 
Part 2. Clean Junk Files with Quick Clean
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Step1: Choose Quick Clean Mode Step2: Start to Scan Device
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Step 3: Preview and Select Files to Remove Step 4: Start to Clean Step 5: Check Cleaning Results
 
Part 3. Clear Private Data with Deep Clean
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Step 1: Choose Deep Scan Mode Step 2: Backup Your Device Step 3: Start to Scan Device(1)
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Step 3: Start to Scan Device(2) Step 4: Preview and Select Files to Remove Step 5: Start to Clear
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Step 6: Restart Your Device