If your iPhone is completely dead, you can try plugging it into a power source and holding down the home button and the lock button at the same time. If that doesn’t work, you can try plugging it into a computer and pressing the power button for about 10 seconds.

It depends on the battery’s health. If the battery is in good condition, it will take less time to charge. If the battery is damaged, it will take more time to charge.

There are a few things that could cause your iPhone not to turn on after it has died. One possibility is that the battery is completely drained and needs to be charged before the phone will turn on. Another possibility is that there is something wrong with the phone’s hardware, such as a broken screen or a malfunctioning battery.

The answer to this question depends on a variety of factors, including the model of iPhone, how often the phone is used, and which features are enabled. Generally speaking, a fully charged iPhone will last for between 8 and 10 hours of active use.

If your iPhone is dead, you’ll need to plug it in to charge. Once plugged in, you’ll see a lightning bolt on the screen and the percentage of battery life will start filling up.

It can take up to 24 hours for a dead battery to turn on.

It depends on the phone and the battery, but generally it takes a few hours to charge a dead phone battery.

There are a few things you can try if your iPhone won’t turn on. First, make sure that the phone is charged and that the charging cable is properly plugged in. If that doesn’t work, hold down the Home button and the Sleep/Wake button at the same time for about 10 seconds. This will restart your phone. If that still doesn’t work, you may need to take your phone to a technician for further assistance.

It depends on the device. 5% of a battery might last for a few hours on a small device or a couple of days on a larger device.

21 battery can last up to 3 years.

50 battery can last for a few hours, depending on the device.