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Repair information and guides for the Apple iPhone 5s that was announced on September 10, 2013. Model: A1533, A1453, A1457, A1528, A1530, A1518

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Why won't my iPhone turn on?

My Iphone 5s kept shutting itself off and getting stuck in an infinite loop of rebooting, this went on for about a week and then finally the last time it happened my iphone now just won't turn on. Every time I try and Turn it on it loads the apple screen for about 4 seconds and then the screen just goes black, but doesn't completely shut off until about 10 seconds after the black screen appears. I don't have a computer that is compatible with iTunes so i am not able to recover it that way.

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It kinda sounds like the battery is not charging. Can you plug it into a USB ammeter to see if there is any current flow?

Otherwise, a bootlooping device can be caused by many things.

Try these things (if you haven't already) to see if anything helps:

  • Try a hard reset (Home & Power button for 10 secs)
  • Use a genuine Apple Lightning connector
  • Use a genuine Apple charging brick and let it charge overnight
  • Try to connect it to different computers (mac/pc if possible) with an updated iTunes
  • Put the phone in recovery mode (search DFU Mode). Careful, this can reset your data
  • Use 3uTools for putting it in and out of Recovery Mode
  • Use 3uTools to flash the firmware (you can't downgrade)
  • Check the condition of all the flexes (with magnification)
  • Disconnect the Front Camera Ribbon from the logic board and reboot your phone
  • Disconnect the screen assembly completely and see if iTunes will recognize the phone.

Otherwise, you may have a logic board issue. If you are uncomfortable doing these steps, consider finding a repair shop to do the troubleshooting. A shop that also does micro-soldering can go deeper if the problem is not modular in nature.

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