How I fixed the battery issue on the Lumia 920.

[o0Nighthawk0o]

One thing I have noticed. About 2 weeks ago my Lumia 920 developed a thin line down the screen so I called and had it replaced. My original phone at times would discharge at a rate sometimes reaching 20% an hour. My replacement phone has never gone above a discharge rate of 8% and that was under heavy usage. I even had a four hour long phone call at one point and the battery only drained by 30% during that four hours. My replacement is even running more background apps than my original phone.

My wife complains about her battery every so often but my daughter doesn't. The difference I noticed is that my replacement phone and my daughters seem to be a different 'generation' than my original or my wife's current phone. On my original and my wife's phone, in the top left corner they have the AT&T symbol PLUS the AT&T letters. My daughter's and my replacement does NOT have the letters, just the symbol. Is this a new/different iteration of the 920 and did they fix the battery problem or does this not matter? I don't know, just something I noticed.

 

[uselessrobot]

For Lithium Ion batteries full charge-discharge cycles shorten battery life. Occasionally they benefit from the reset, but generally the ideal cycle is keeping the phone somewhere between 20% to 80%. Constant charging is also detrimental to longevity. Letting it go dead entirely kills the battery even more quickly.

As for the battery life issue, it has nothing to do with the battery. I've searched for the problem on all phones that run the same hardware; Z10, Samsung Galaxy S3, HTC One S and HTC 8X. I've seen people describe similar problems despite the disparate OS's. This would imply the problem is at a fundamental hardware level. However, the complaints seem more prevalent with the Lumia 920 which indicates an OS issue, and perhaps Nokia's implementation in particular.

All I know if that I many a time I thought I had cracked the secret of the battery life issue only to see the problem return. I don't think anyone's found a solution. It seems like any app at all will eventually cause the problem, the only way to escape it is to strictly use your phone for calls, texts and emails. Even the standard camera app seems to eventually lead to excessive drain. So there's no rhyme or reason here. Of course, the moment you restart the phone the problem clears out unless you go right back to what you had been doing previously.

 

[MaXi32]

There is a huge difference between removing the battery and letting it run down to zero.
The first implies only taking it off without using it, while the other implies giving it an intensive use in order to drain it.
The problem with draining a li-ion battery is that these kind of batteries tend to stop retaining the same charge they had when they were new and start recognizing an inferior value as 100%.
Example:
If you have a li-ion battery that can hold 100mAh and you let it drain to 0%, the next time you recharge it it will only hold 98% of those 100mAh, until it reaches the point where it becomes useless.

We are talking about Lumia 920. AND LUMIA 920 uses Li-Po battery not Li-ion. Any difference?