I've stumbled across a dumb one today, not sure how many know it. So here it is:
It's about iPhone 5S battery replacement. To remove the old batteries, I used to try the iFixit guide approach (I'm quoting them, step 25 of the battery replacement guide): "Pull the outside battery adhesive tab straight up and carefully around the corner of the battery." Right at the corner, the tab would be severed, and I often ended up heating the back of the phone and struggling with the battery to remove it.
But today I received an iPhone 5S with severe water damage.
I removed the screen, disconnected the battery, and took out the logic board. Once I started the water damage treatment on the board, I went on to remove the lightning dock connector, to clean it. Then I said why not remove the battery, since I'll probably need to replace it. So I pull out the adhesive tab, cut it in half like instructed by iFixit, and accidentally pull on it straight back towards where the lightning connector used to be (instead of around the corner). The adhesive tab came out entirely, without hassle.
I tried the trick on the 2nd half of the tab, and it also came out in 1 second.
I was happy like a child with a new toy for having finally cracked the adhesive tab trick of the iPhone 5S battery!
Let me know if many of you knew that trick (or not), because I feel really dumb for not having figured it out before, and I'd like to know where I stand! :)
Now let's hope I'll be able to successfully repair that water damaged board :)