That's exactly what I did. I got rid of this POS and got an iPhone 6s Plus. Battery life is back to amazing again.
My main priority with battery life is standby time. Even though I carry my phone with me at work, I don't get much chance to use it, so standby time is really important to me. Standby time on my Note 5 is horrible. I tried all the tricks to help battery life, but nothing really worked. Then I came to the conclusion that I was so sick and tired of trying to tweak things to get good battery life.
For example, on my 6s Plus. After 2 days of light use and mainly standby time, I am usually down to around 65% to 70%. My Note 5 with the same usage probably be dead. For the week, I could get by with charging my 6s Plus twice, and that is without the battery going all the way to 0. I know some people may balk at what I'm saying, but standby time is important to me.
I've used almost all the iPhones since they came out, and have used a lot of Android phones also. Even though I much prefer iPhones and iOS, I'll still buy an Android phone when ones comes along and catches my eye, just as I did for the Note 5. But every time I get an Android phone, I love it for a few months, then something starts acting up that reminds me of why I like iPhones better.
The Note 5 is a really nice phone, but has horrible battery management. More than likely software related and not hardware. I still have my Verizon Note 5, which is my work phone, so I can still use that to get my Android fix.
If you don't have the money for a new iPhone, go to order one on Apple's website with in-store pickup, and when at the pay part, sign up for PayPal credit. As long as you don't have really bad credit, it should get approved. Then just pay for it monthly. I think they even have 0% interest if paid off within 6 months.
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