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hey guys. I've got a major problem! 

Let me start with what the problem. My phone works fine when plugged in to the charger but when i unplug it at whatever percentage it then turns off withing a minute,

Reason/s why i think this may be:

Well yesterday i was at a party and my phone was at 2% for like an hr and 1% for another hour or so, I forgot to charge it and i may have needed to receive a call. Did i drain my battery and damaged it? So that somehow my phone thinks that the battery is at a point where it needs to turn off? 

PS: when i was charging it finally, the phone would not have turned on for about half hour (i'm assuming that this is so because the phone needed to charge the battery to a specific %age?)

The battery has never been changed so i'm wondering if there is anyway that i can reset it or anything i can do that won't cost money?

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Seems like your battery is fried. At this point you could see if apple could do something. I doubt it's software doing it. Unfortunately this might cost something. Completely draining your battery. No damage comes out of that. 

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Seems like your battery is fried. At this point you could see if apple could do something. I doubt it's software doing it. Unfortunately this might cost something. Completely draining your battery. No damage comes out of that. 

how does it get fried randomly tho? i dont know why but i find it extremely coincidental that this happened right after my battery was drained? 

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how does it get fried randomly tho? i dont know why but i find it extremely coincidental that this happened right after my battery was drained?

Maybe it was fried before or something and was kept alive by the little charge it had. It's most likely coincidence as draining and battery will never hurt it. The battery probably gave out considering it is a 3 year old phone.

PC: 4770K @ 4.0 GHz --- Maximus VI Hero --- 8 GB 2133 MHz Corsair Vengeance Pro --- EVGA 780 TI Classified @ 1300 MHz --- Samsung Evo 250 GB --- Corsair RM 750 --- Corsair Carbide Air 540 --- CM Storm Rapid-I (MX Blues with PMK Evergreen Keycaps) --- Windows XP --- Razer Naga --- Custom Loop Parts: 380I, EKWB 780 Classy Waterblock and Backplate, 240mm and 360mm XT45, Swiftech MCP655, EKWB multi option reservoir, Mayhems Pastel Red, Primochill Primoflex Advanced Clear Tubing, 5 SP 120 Quiet Editions --- Mobile: Surface Pro 3 (i5 128gb) with JD40 (MX Clears) and Microsoft Sculpt Mouse --- Galaxy S6

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Maybe it was fried before or something and was kept alive by the little charge it had. It's most likely coincidence as draining and battery will never hurt it. The battery probably gave out considering it is a 3 year old phone.

i really know know what i did exactly but it's fixed! been on for an hr now and at 87%

all i did was open the phone and remove the battery and dock connector then it started back working!

PS; i changed the screen (and then changed it back to the old screen) about 4 days ago 

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i really know know what i did exactly but it's fixed! been on for an hr now and at 87%

all i did was open the phone and remove the battery and dock connector then it started back working!

PS; i changed the screen (and then changed it back to the old screen) about 4 days ago 

i have a strong feeling that the problem will come back 

i hope it won't 

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