This is the iPhone 4 Series battery replacement that can easily replace the battery in your cell phone. Do you have an iPhone 4 Series that won't hold a charge? Whether the battery runs down quickly or won't take a charge at all, it is likely time to replace the iPhone 4 Series battery.This iPhone 4 Series battery replacement available here at Touch Wireless and is a top-of-the-line replacement battery that is designed specifically to work with the 4 model of the iPhone. We quality test all of our products to ensure that it will properly work with the iPhone 4 Series . It works great as a replacement, or to have as a backup to double your usage time when you can't get to a charger.