Any tips to make my iPhone 4 faster?

I have a 32GB iPhone 4 on Verizon. Been noticing that the responsiveness has been lacking. App loading. Locking. Typing. I'm using iOS 6.1.3 Any pointers to speed up my phone? I'm up for upgrade in July, so I'd like my phone to function accordingly until then.

Go to my YouTube channel where I help people with technical problems on electronics: http://m.youtube.com/...ture=guide

Close any apps that you are not using.tap the command button 2x then hold down any icon until they wiggle.tap the red minus sign to close the app.don't worry, you are not deleting anything.tap the command button 2x to return to your regular screen

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