Screen Protector [6.1 inch], [Tempered Glass] [Case Friendly] [Alignment Frame Easy Installation] [3D Touch]

Followed instructions to fully discharge 5 times and battery lasts several days now instead id a day. Way longer life.

It was hard to pick from the surprisingly large number of choices, but -- if the first three months are any indication -- it looks like I really made the right choice. This battery is at least as good (probably *better* than) the one that came with my Note 4 when it was new. It is *definitely* better than the other two authentic Samsung replacements I've had in the interim -- one from an authorized dealer (B&H Photo), and another shipped direct from Samsung when that battery went bad within the manufacturer's warranty period. Anyway, I'm really happy with this purchase.UPDATE: Shortly after I wrote the original review (which was 3.5 months after buying the battery), I had an incident where the battery didn't fast-charge as usual. But it turns out that issue only lasted one day. Not sure what happened -- maybe my connections weren't tight? Anyway, since then it's been back to consistently fast-charging fine. It's been over six months now, and I'm really pleased with this purchase. It's still at least as good as -- and probably *better* than -- the battery that came with the phone when it was new.UPDATE 3-28-22: It's been over 1.3 years and this battery is still working great. I can't say everyone will have the same experience (and some of the reviews seem to bear that out), but I've been really pleased by this battery. Now if I could only update the phone to a later OS... But it's such a workhorse, and so exemplary as an actual phone (for LOUD and CLEAR verbal communication) that I want to stick with it.

A high quality battery for the money. Definitely worth it durable too I highly recommend it over other name brands.

Tools that come with the package are great for battery replacement. Make sure you watch a few Youtube videos before you begin. Three key points for opening up iphone6S to replace battery1. You want to use hair blower to warm up the edge of phone, to soften the seal and make opening up easier2. If the old seal is largely intact not broken after opening up, then there is no need to replace it. This saves you from having to disconnect the screen from the main body. This saves a lot of time.3. Pull the double sided tapes under the old battery length wise, do not pull to the side. do not pull against the speaker sharp edge which will break the tape.Good luck!

Not a good quality battery not charging properly