1430mAh 3.7V Li-polymer battery is perfect for 4S / 4GS / CDMA / AT&T / Sprint / Verizon or any other iPhone 4S Model.</br>The perfect 1:1 copy size as original battery?? perfectly fit for your iPhone.</br>Brand-new Grade A Cell: The quality battery cell releases energy steadily and can be well stored for a long time. The battery cell is well made?? highly durable and reliable.</br>Safety and durability is guaranteed with multi-protection against overcharge?? over discharge?? over current and short circuit issues.</br>Polymer battery cell: based on same volume?? lithium polymer battery has a lighter weight?? a higher 20% capacity and is much safer than other batteries.</br></br>Product Description</br></br><b>iphone Rescue</b><br><br>Most frequently-seen cellphone batteries suffer a sharp decrease in battery life by 10-20% after 6 mouths as usual. After another 6 months?? the battery obviously needs to be charged much more frequently than before. For such common batteries?? battery level runs down more quickly as the battery wears out. In some cases?? the phone goes power off when ba