本文開啟ios原生虛擬內存教程只適合於 iOS 5.1.1~6.1.2系統，iOS 6.1.2 對iPhone4的內存要求太高了，打開沒幾個軟件就出現很多LowMemory的錯誤報告log，成功開啟虛擬內存即可解決問題(就像Win PC用硬盤空間彌補內存空間不足的情況)。

　　我按照內存使用率，從高到低，將部分顯出出來，給懂的人看，有圖有真相!

　　一共運行88個程序，包括真實賽車3，英雄戰歌等多款大作，自帶的512M內存，只剩下8824K自由空間，而此時虛擬內存調用320MB磁盤空間，完全感覺不到絲毫卡~

　　以下是相關文件說明，如果覺得不好，把com.apple.virtualMemory.plist和 com.apple.dynamic_pager.plist刪除，把com.apple.SpringBoard.plist 還原，然後在命令控制台中輸入reboot就可以恢復到之前的時候，不用從刷手機的：

　　com.apple.virtualMemory.plist 放在 /private/var/preferences

　　com.apple.dynamic_pager.plist 放在 /System/Library/LaunchDaemons

　　在 /System/Library/LaunchDaemons/com.apple.SpringBoard.plist 必須進行手動的修改，修改內容往下看。(記得備份)

　　在 /private/var 裡新建VM的文件夾，權限設置如圖：

　　全部完成後，重啟手機，/private/var/VM 出現swapfile0就說明成功。

　　軟件名稱： iFiles(蘋果資源管理器)1.9.3

　　com.apple.SpringBoard.plist 按照規則添加紅色部分，建議使用iFile進行修改：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>EmbeddedHomeScreen</key>
    <true/>
    <key>HighPriorityIO</key>
    <true/>
    <key>Label</key>
    <string>com.apple.SpringBoard</string>
    <key>MachServices</key>
    <dict>
        <key>PurpleSystemAppPort</key>
        <dict>
            <key>ResetAtClose</key>
            <true/>
        </dict>
        <key>com.apple.SBUserNotification</key>
        <true/>
        <key>com.apple.UIKit.statusbarserver</key>
        <true/>
        <key>com.apple.aps.alertprovider.xpc</key>
        <true/>
        <key>com.apple.bulletinboard.observerconnection</key>
        <true/>
        <key>com.apple.bulletinboard.publisherconnection</key>
        <true/>
        <key>com.apple.bulletinboard.settingsconnection</key>
        <true/>
        <key>com.apple.bulletinboard.systemstateconnection</key>
        <true/>
        <key>com.apple.bulletinboard.utilitiesconnection</key>
        <true/>
        <key>com.apple.chatkit.clientcomposeserver.xpc</key>
        <true/>
<key>com.apple.dynamic_pager</key> <dict> <key>ResetAtClose</key> <true/> </dict>         <key>com.apple.icfcallserver</key>
        <true/>
        <key>com.apple.springboard</key>
        <dict>
            <key>ResetAtClose</key>
            <true/>
        </dict>
        <key>com.apple.springboard.UIKit.migserver</key>
        <dict>
            <key>ResetAtClose</key>
            <true/>
        </dict>
        <key>com.apple.springboard.alerts</key>
        <dict>
            <key>ResetAtClose</key>
            <true/>
        </dict>
        <key>com.apple.springboard.backgroundappservices</key>
        <dict>
            <key>HideUntilCheckIn</key>
            <true/>
            <key>ResetAtClose</key>
            <true/>
        </dict>
        <key>com.apple.springboard.blockableservices</key>
        <dict>
            <key>ResetAtClose</key>
            <true/>
        </dict>
        <key>com.apple.springboard.carditemscontroller</key>
        <true/>
        <key>com.apple.springboard.icongeneration</key>
        <true/>
        <key>com.apple.springboard.processinvalidation</key>
        <dict>
            <key>HideUntilCheckIn</key>
            <true/>
        </dict>
        <key>com.apple.springboard.remotenotifications</key>
        <dict>
            <key>ResetAtClose</key>
            <true/>
        </dict>
        <key>com.apple.springboard.services</key>
        <dict>
            <key>HideUntilCheckIn</key>
            <true/>
            <key>ResetAtClose</key>
            <true/>
        </dict>
        <key>com.apple.springboard.watchdogserver</key>
        <true/>
    </dict>
    <key>POSIXSpawnType</key>
    <string>Interactive</string>
    <key>ProgramArguments</key>
    <array>
        <string>/System/Library/CoreServices/SpringBoard.app/SpringBoard.env</string>
    </array>
    <key>RunAtLoad</key>
    <false/>
    <key>ThrottleInterval</key>
    <integer>5</integer>
    <key>UserName</key>
    <string>mobile</string>
</dict>
</plist>