Why are they Bricking themselves?

Hi,

I am new here and am trying to figure out how Apple are allowed to render my customers iPhones and iPads useless after I am repairing them to survive!

I use anti-static wristband, tools and anti-static bags to work on so there's no chance of logic board damage/failure/similar! I also have over 3 years experience in iPad and iPhone repairs...

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Ok, so, a couple years ago, on an iPhone 4 / 4s, when I used to unplug the battery, it would revert the time and date back to January 1st 1970...Right?? YES

I have just replaced a screen assembly and a battery on an iPhone 6 today, and now it won't power up at all...Bricked!!

I did some research, and found the most recent iOS9+ 1970's bug and there seems to be a bit of a coincidence here! As Apple is now bricking devices that go back to 1970 with it's new iOS..Is this why this iPhone 6 has bricked itself? Because I removed the battery?

So many odd Brickings happening lately, I am wondering if the new iOS is the culprit here.

I wonder if the new iOS has the ability to disable the Power IC if anything is disconnected???

I never has this problem before iOS 9.3.2

If this is the case, and Apple are bricking phones... what entitles them to do this and since when does Apple have authority! When someone buys an expensive iPhone/iPad, they certainly are entitled to have it repaired by a third party!!! Apple have even Monopolized on the fact that YOU CAN'T EVEN REPAIR YOUR OWN DEVICE - It has to go through Apple is this correct?

If so, I might have to reconsider my Career if Apple continue to be greedy:mad:

Also, am I right to say that if I use any third party repair part it will

disable/Brick the iPhone/iPad entirely?

Sorry for all the questions, but I have over £1000 worth of iDevices here, and I believe Apple's new iOS is the culprit!!

Any advice would be greatly appreciated!

Thanks in advance :D