How to: Speed Up iPhone 3G on iOS 4 with 5 Fixes

I know that most of iPhone 3G users complain about the performance of the device after upgrading to iOS 4, Some users disabled Multitasking but still very slow, so here's a round up of fixes for slowness of iPhone 3G on iOS 4, check them below..

Perform a “hard reset”,
Hold down the sleep/wake and home buttons simultaneously for roughly 15-20 seconds, until the screen powers off then an Apple logo appears, which signifies a reboot. Some users have (oddly enough) reported that performing two hard resets resolves the slowness issue.

Restore Again,
That what I think, restoring an iPhone may fix slowness but this time don't restore from backup. I knw it will will delete contacts and other data but may resolve this issue.

Give More Space,
You may leave 10% free space for your iPhone as iOS 4.x need a lot of space to perform faster.

Turn off Spotlight,
Already told you that Spotlight Search may solve this issue, follow the step by step guide posted here to turn of spotlight search.

Turn off MMS,
Touch on Settings > Messages > MMS messaging and change MMS Messaging to “Off,” then perform a hard reset as shown above.

After doing that all and performance still bad, Then go and ask Apple to fix this issue! Oh, got a tip to make iPhone 3G perform faster? Tell us by commenting below..