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Released September 20, Apple's largest and most expensive 2019 smartphone features a 6.5" OLED display, a triple-lens camera system, and greatly improved battery life. Successor to the iPhone XS Max.

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Battery change with old battery board

Hello, I bought a new battery for my iPhone, but since I don't have a programmer, I wanted to put the old circuit board on the new battery and no matter what percentage of capacity it shows, i want the foreign battery message to disappear. However, after replacing the circuit board, the phone does not want to turn on, it constantly lights up that there is no battery, and once it happened, the Apple logo was flashing, but now it constantly shows that there is no battery, can you give me some advice?

Just to add, I was looking on the internet at an iPhone 11 battery change and they put 4.2 volts of current on the battery somehow to activate the BMS chip and I don't know if it's that or something else!

I forgot to say that it is probably not necessary, but it only works in the charger and shows that there is no battery

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I haven't had occasion to try it yet, but there's something called a battery activation board you can buy that's supposed to do exactly what you need in order to reuse the BMS. This is the one I bought.

Battery Activation Detection Board Battery Fast Charge For iPhone 5-13 Pro Max Huawei Android Circuit Board Charging Tester

The other thing I've seen in videos is some odd requirement that you have to put in an aftermarket battery into the phone and get the non-genuine battery warning, then when you put the replacement battery with the original BMS it supposedly works.

This is all based on my reading as I've been trying to keep up on this stuff since my family all has iPhones and most of them have models newer than the iPhone X, which all have paired batteries.

Maybe some of the guys on here who do this for a living can chime in and confirm or deny anything I've said.

Let us know how it all goes; hopefully it'll help all of us to know how this works.

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Thank you! Now I've made up my mind to try to supply it with 3 batteries of 1.5 volts to raise the voltage to 4.5, I don't know if it's a problem, but if it doesn't burn, it will activate in my opinion.

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