iPhone 4 won't turn on ! iPhone hết pin không bật lên và sạc được ??

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Một ngày bạn làm việc quá chăm chỉ quên không sạc pin cho iPhone 4. iPhone của bạn sẽ tự động ngắt nguồn, bạn cố gắng hết sức để cắm sạc pin. Nhưng vô ích, màn hình vẫn đen xì xì, máy tính không nhận iPhone, không còn dấu hiệu của iPhone đâu cả?
  iPhone của bạn hỏng rồi à, bạn tìm cách liên hệ với Reseller hoặc cao thủ iPhone để nhờ giúp đỡ ?

Việc bạn cần làm là: bình tĩnh , bấm giữ phím Power + Home trong vòng 10-15s , bạn sẽ thấy logo của Apple xuất hiện trên màn hình iPhone của bạn. Rồi bạn sẽ thấy, iPhone đang được sạc pin.

Để tránh tình trạng này, bạn hãy reset về trạng thái cấu hình mặc định của nhà sản xuất ( việc này không xoá apps của bạn đâu nhé ) .

Chúc bạn luôn vui vẻ với chiếc iPhone thân yêu của mình.

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So, it was a beautiful day yesterday and I went to a park to play volleyball. I left my iPhone 4 inside the dashboard in the car which was parked in a totally shaded cool area.

The battery was at 60+% when I left. When I got back to my car a couple of hours later, the iPhone 4 appeared to be dead. It  wouldn’t respond to any key presses. I tried

    holding the power button pressed for 10 secs
    holding the home and power button for 10 secs
    charging the iPhone with a wall charger for an hour (no charging indicator came on)
    charging the iPhone with iMac
    opening iTunes and holding the power and home button for 10 seconds. iTunes found the iPhone 4 in recovery mode and asked me to restore. I tried it but the restore failed.

How to turn your iPhone 4 back on

At this point, I figured my iPhone 4 was bricked while it was sitting in my car. And I was going to call Apple to get a replacement or get an appointment at the Genius Bar. So, this morning I woke up and pressed the power button and the darn iPhone 4 turns on like nothing ever happened. But, the battery was at 18%. As much as I am happy to have a working iPhone 4, this has left me a bit worried. Looking at Apple’s forum, it seems like I am not the only one who have experienced the ‘My iPhone 4 won’t turn on’ syndrome. There are a lot of reports and people suggesting the things I tried to make it work. There are also reports of Apple replacing the iPhones with this issue. A forum thread had an interesting clue about this problem.

    ‘It could be the proximity sensor stuck in face mode’.

This actually makes sense as this morning I was told that a friend called and my iPhone rang 4-5 times before going to voicemail although my iPhone appeared dead. If it was turned off, it immediately went to voicemail. So an issue with the proximity sensor is the most plausible reason I could think of, for what I experienced. This would also explain the battery loss from 60+ to 18% overnight on standby – the proximity sensor was working overtime. This is just my best guess. I am going to give mine one more week and if it happens again, I will be taking it back to the Apple Store. Have you experienced a similar issue on your iPhone 4? Share it with us.

Update: (08/16/10) I have found a way to power it back on easily. And lots and lots of readers in the comments are confirming that the following worked for them. So, don’t despair and try this.

    Hold the Power and Home button together for 10-15 seconds. Let go of both.
    Just hold the Power button for a few seconds to see the Apple logo.

And doing the following fixed this issue for me for good.

    Go to Settings -> Reset -> Reset All Settings. (This will reset your Settings to factory default but will not delete App data or media).
    Or as a last ditch effort before taking it to the Apple Store, try restoring your iPhone 4 to factory default by doing a Factory Restore from iTunes. (I didn’t have to do this – remember you will lose all your App settings, game highscores, etc.)