Here is how. The idea is came into my mind in seconds. A few weeks before I have downloaded iPhone massage application from AppStore (free) for my neck pain, which can enables iPhone to continuosly or intermittently vibrate. While I was trying to discharge my iPhone battery to calibrate it, suddenly I have realized that it would be a nice idea to use the app. Battery was nearly %9 percent, and It has finished in minutes. By the way the app is completely useless until I find this idea You should know that Apple recommends you to fully discharge and recharge iPhone battery once a month (this prolongs the battery time.) and you have to replace your battery after 400 total discharge-recharge period.

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