Reportedly, it’s really difficult to remove the screen of the Galaxy S5, because Samsung is using a special adhesive to keep the display panel attached to the rest of the body. After you get the display out of the way, the teardown can advance faster - but the entire operation will likely still last over an hour.
All in all, it looks like repairing a Galaxy S5 will be a hard thing to do (just like repairing an HTC One M8). But we shouldn’t be surprised about this. The S5 is dust- and water-resistant (IP67-certified), so Samsung has to make sure that its internals are very carefully assembled.
An interesting fact pointed out by Ferra is that the battery of the S5 is not square-ish, like the batteries found inside the Galaxy S II, S III and S4. It’s an elongated battery that's similar in shape to the batteries used by Apple on its latest iPhones.
If you’re curious to see the Samsung Galaxy S5 disassembled, check out the gallery below, or the source link at the end of this post. If you're not curious, but you are looking forward to buying the new Galaxy, wait for it to become available, and hope that you won’t need to have it repaired.
source: Ferra.ru (translated) via GSM Arena