UltraLast - Lithium-Ion Battery for Apple® iPhone® 4S

The battery I purchased through best buy had about the same amount of charge capacity as the original battery I was replacing. It was probably sitting around for years since I have an iphone 4s. The good thing was that the battery came with the tools to make the change out--so maybe it was a fluke.

I bought this to try to revive my daughter's dead iPhone but it did not work.

All the tools with it and was easy to install. I bought another battery for my 3GS that did not work but could have been the phone. Overall, it is working and I'm satisfied.

I read previous review before purchasing. They did not receive tools needed to replace battery, BB responded that they would begin supplying tools. I received two screwdrivers, a Phillips which is needed and a slotted which is not. I did not receive the pentalobe screwdriver required to remove the back cover of the iPhone 4. If they are going to supply the tools with the battery, they should include the correct tools. I called customer service and was bounced around a few times for over an hour. Finally call was dropped.

I received and installed my new battery 4/22/16. all tools needed came with the battery. it was not difficult to install, and took about 30 minutes. I have not noticed a difference from the old battery charge. the phone still does not hold a charge very long. although I can not say for certain whether this was a bad battery or a problem with the phone itself. for the price, it is still worth a shot and the cheapest option I could find.

I purchased this battery to replace a worn one in my 4s. Looking at the enclosed picture you would think the tools to open the case come with it. Don't be surprised when you receive the battery only.....no tools are enclosed.

This battery failed after just three months of very, very light use. Best Buy simply state that they do not accept returns for batteries. Even for a clearly faulty product. So save yourself the hassle you "Best Buy" somewhere else.

This item was a perfect cheaper alternative for my phone. I recommend it.