Question about Apple iPhone Smartphone

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Turn on problem

Yesterday i depleted an Iphone battery and whe i got home i connected it to my laptop to recharge and it seemed to charge...when i woke up today my phone wouldn`t turn on and when i connected it to the power supply it wouldn`t charge.
Thankyou for your time

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  • Robert Garriques Aug 29, 2008

    My phone battery was low so I plug it into my computer. When I looked at the phone several minutes later it has the apple logo on screen. I unplugged the phone and pushed the on button and the home button at the same time to get the logo to go away. The phone powered up so I plugged it back in to my computer and it showed that it was charging. The next time I looked at the phone it had a blank/black screen and I can not get it to power on.

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  • 45 Answers

Some times, the charging cable from the laptop will not charge a fully depleted battery. If you have not already done so, try charging it using the wall charger that came with the phone.

Hope this works!

Posted on Aug 29, 2008

  • Stephen Aug 29, 2008

    If after charging your iPhone, you still cannot get it to come on, Hold down the Power Button (Located on the top and right of the phone) and the "Home" button (Round button at bottom center of screen) for just over 10 seconds. They must BOTH be held at the same time. This will boot your phone if it has been turned off completely.



    Let me know if it worked or not. Thank you!

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2 Answers

Battery will not charge


li-Ion batteries have a bad habit: whenever fully depleted, they lose a few cells, to the extent that they might not be able to hold a full charge if enough cells are damaged. In other words, repeatedly using a laptop (or any other Li-Ion powered device) to battery depletion can shorten the battery's life significantly. You might want to keep the batteries fully charged whenever possible and avoid fully depleting them too often.
There is also the habit of "re-setting" the batteries by using the "fully deplete-fully charge" procedure. It only applies to niMH or NiCD batteries ( and is used to erase the "memory effect" ) but is damaging to Li-Ion batteries for the reason mentioned above.
so if your battery can not full charge,this mean you need change a new battery for your laptop
http://www.aulaptopbattery.com.au

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Many users do not use their notebook/notebook batteries correctly. The battery in a laptop/notebook/netbook is a rechargeable battery, like the battery in a Cellphone, a Digital Camera an eReader or an MP3/MP4/MP5 Player. This type of battery needs to both charge and discharge, if it is to perform to its maximum capacity and have a full, long life.

You would never dream of using a Cellphone, Digital Camera, an eReader or an MP3/MP4/MP5 Player only with the devices permanently connected to the mains electricity, because they are all devices that are designed to be used while the user is moving around whether indoors or outdoors, powered by their rechargeable batteries. the batteries of such devices are only recharged when the charge in their cells is depleted and then only for as long as it takes to restore full charge to them.

As with the other devices mentioned, a laptop/notebook/netbook's battery is designed for mobile use and the user should charge it to 100% full and then stop charging it to then use the device on battery power alone, until the battery is low on power, when the recharging cycle can then be repeated.

A notebook/netbook has more flexibility than the other devices mentioned because, unlike the other devices, it can also be powered directly from the mains electricity, without the battery installed.

If your laptop/notebook/netbook is mainly used away from the home or office, it is fine to leave the battery permanently installed. If, however, it is mainly used indoors at home or at work and always or almost always on exactly the same desk or table, then it makes little sense to use it either on battery power alone or with the battery permanently installed.

Charge the battery up to full charge and then disconnect the battery from the device and keep it safely for when you next need to use the laptop/notebook/netbook on the move (if the battery is stored for long periods it may require additional recharging to both maintain the battery's condition and to keep it fully charged because low level power dissipation takes place in a disconnected battery). Then connect the device to the mains electricity without the battery and continue using it like that.

If the laptop/notebook/netbook is mainly used in a single permanent indoor location, then charging has to stop when the battery has reached 100% full charge and should only be resumed when the device gives a low battery charge warning.

It is also important not to let rechargeable batteries drain completely by ignoring the low battery charge warming and continuing to use the device until the battery runs out of charge and the device powers down suddenly. Sudden shutdowns like this are neither good for the battery nor the device and can shorten the lifespan of both.

Continuing to charge any rechargeable battery when it has already been fully charged damages and shortens the life of the battery. It can even damage the internal Power Management System of the device if done over a sustained period of time and/or for prolonged periods of time.

When your notebook only shows 75% as the maximum charging level, this is an indication that one or more (probably two) of the individual cells that make up the battery are fully depleted, damaged and probably no longer capable of storing a charge, for the reasons given above. You should stop charging this battery after it has reached 75%, otherwise more cells are likely to become damaged and so on until the entire battery is dead, unresponsive and useless.

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You need to replace your old battery. Don't over charged your battery. If you are using your laptop in your house it is better not to use it with battery. Just use the power adaptor/supply only. Then make sure you will drain the battery let say once a week. =)

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Try removing and re-seating each component ... to see if the connection is the problem.
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-CompDoctor

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Karen,
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