iPhone 5 turns on and off by itself

iPhone 5 turns on and off by itself After replacing the power/ volume flex cable on my white iphone 5 it started behaving strange, it started turning on and off by itself, the first thing i tried was to connect it to itunes and update it to ios 8.1.2. When i updatet it also restored it. But the same thing started happening again.
Asked by: Guest \| Views: 361

Total answers/comments: 6

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Guest [Entry]

"Hi Vegard,

A/ Did you try cleaning the battery connector using a cotton swab dipped in 90%+ isopropyl (rubbing) alcohol? It is simple to try, so rule it out first.

B/ Next, try and disconnect the PMV cable that you previously replaced.

C/ While keeping it disconnected, attach the battery, and connect your iPhone to a charger or to a laptop. The iPhone should then restart. If the issue is gone, reseat the cable. If the issue returns, you installed a defective PMV cable and you need to replace it again. Try a different source, get a good quality cable.

D/ If all the above don't solve it, examine the battery connector and around it using a magnifying glass. Look for anything damaged, broken, missing, part removed. There's a glass-like rectangular component just above where the lightning dock connects on the board. Is it chipped?

Let us know if you find something, and upload a picture if you can."

Guest [Entry]

"Have you tried replacing the proximity sensor again? Maybe it is a faulty sensor that you installed.

I just had an iPhone 5 this past week that had the same problem as well. I replaced the screen display and all the problems went away.

Don't know if this will help, but give it a shot and see if it works."

Guest [Entry]

"Try disconnecting all hardware like rear/front camera etc, and see if it powers up fine, if it does, plug one in at a time, and when the problem happens again, that will be your culprit.

If it still has the problem with everything disconnected, then I'm unsure what else there is."

Guest [Entry]

This happens to my iPhone 5 as well. Never had with my previous iPhones. I replaced the battery still happens. I have to connect the cable to use it. But not properly I can only get to phone by sliding it across to only 4 apps.

Guest [Entry]

My dad got me an iPhone of ebay, and it is terrible the battery just goes down and it's really slow one minute it says its on 100% then its on 1%.I just don't understand, now i have had my phone for a while and its powering on but the it just powers of so i can't go on my phone. HOPE someone can help me :)

Guest [Entry]

What you have to I went to the repair shop then didnt say anything soo I went home and took the sim card out,after a while about 5 mintues after I put the sim card back in and i didnt do anything again