[4000mAh Battery for iPhone 12 and iPhone 12 Pro 6.1 Inch Ultra High Capacity Replacement Battery for iPhone 12 A2172 A2402 A2403 A2404 Note 3

My original battery had gotten so bad that I had to charge my phone every couple of hours. I can confirm that this battery works on iPhone 12 Pro and it lasts all day even while using GPS to drive around! This is not an easy battery swap so if you aren't handy I wouldn't recommend it. Also, I did have to align the flex cable on the battery to make it line up with the contact on the boards. Lastly, you do get a warning from the phone that this is not a genuine Apple battery. It's not a big deal to me but just want everyone to be aware. Overall I'm very happy with it.

This extended battery revived and improved my old Samsung Note 3. It lasts all day long, maybe two days, depending on use. No more having to access chargers everywhere, multiple times per day. The included case back and cover fit well, no problems. I have had no issues with battery charging (takes longer for full charge, but that is because it is a bigger battery), and no heating issues. Smartphones with removable batteries allow consumers to take advantage of battery innovations and rejuvenation like this. All cell carriers should require manufacturers to sell at least one or two phone models with user-replaceable batteries. But manufacturers try to build in planned obsolescence, by sealing in batteries they know will degrade over 1 or 2 years.

I no it this battery about 2 months ago because my iPhone 12pro factory battery wasn’t lasting as long anymore. Had this one professionally installed and the battery life was about the same as the old factory one. Now it lasts about half a day before I have to charge it again. I don’t use my phone too much. Terrible replacement.

real capacity when i first calibrate is about 3315mah (not 4000 as mentioned in product description). At first, when you replace it, it does last longer vs standard battery After 5 months of usage, if i leave my phone to 20%, it automatically turns off like it doesn't have a charge Updated: up to 4 stars, contacted seller and he asked if i wanted a refund or replacement. I chose refund and seller issued within 3 days, no further questions asked.

Great product

When my old battery was dying, I heard about this battery, so I bought it right away. For the past month this battery made a major improvement out of my phone. I've used my phone for an hour and the battery icon still shows full. It's also cool that it came with a new phone cover. The phone cover is a very thick rubber material, a farcry from the hard plastic covers I'm so used to. Nevertheless the cover is solid and looks beautiful and the battery works like a charm would recommend for NOTE users.

It is larger, heavier than regular battery; the plastic cover & pliant case fit perfectly with a minimal lip around the edges. Followed correct start up & initiation procedures. Having it now for a few weeks I can say it lasts for a day of moderate to heavier use. My only concern is what the extra wattage may promote within the human body. The product itself appears to be as advertised, & we have now to observe how long it will last.

Battery swelled and failed after 6 months. Update 9/7/2023: I reached out to the seller about the premature failure. They responded with three reasons that would cause a battery to fail, none of which applied to my situation. They were kind enough to send me a replacement battery even though they said I was out of warranty. I changed the rating from 1 star to 3 stars due to the good customer service.