I am writing down what I have prepared for this project.
簡單的紀錄一下修理的要點。
Issue: the power button could not be pressed anymore
簡單的紀錄一下修理的要點。
Issue: the power button could not be pressed anymore
狀況：4S電源按鍵失效（不能按）
Reason: the switch inside fatigueed.
原因：內部按鈕開關（關鍵）疲勞失效
原因：內部按鈕開關（關鍵）疲勞失效
The yellow circular part is the mechanism/switch when the power button moves down and touches. This is about $12 to get the whole wire online.
這整組感光排線在網路上買12美金，黃色環形的部份就是從外部按下電源鍵時向下觸及的按鈕開關。其他來源自己找，也有單賣開關的。
這整組感光排線在網路上買12美金，黃色環形的部份就是從外部按下電源鍵時向下觸及的按鈕開關。其他來源自己找，也有單賣開關的。
(These are not the whole tools used, read below)
(這並不是所有我有用到的工具)
(這並不是所有我有用到的工具)
Tools that I used: a paper clip, phillips screw driver, 5 point torx screw driver, tweezers, flat plastic tool (or flat screw driver), bodkin(used for pulling out battery), magnet for screws
我用到的工具（網路上買的4s工具組約4金）：迴紋針，十字起子，五星起子，鑷子，平板工具（或平起子），錐子（平起子也可以）,磁鐵（吸螺絲）
我用到的工具（網路上買的4s工具組約4金）：迴紋針，十字起子，五星起子，鑷子，平板工具（或平起子），錐子（平起子也可以）,磁鐵（吸螺絲）
First step is power off the phone from the assistive touch(in general), by long pressing "lock screen" on the screen.
第一個步驟是利用手機裡面有一個assistive touch(中文應該 叫觸控助理），一個小白點，久按鎖螢幕，就會出現關機選項。
Videos for removing:
拆卸影片
拆卸影片
Trick that i use for removing the battery: a bodkin is used on the right hand side for pulling up the battery since the battering is placed with double side tape on the surface. Other tools can be used as long as it helps pulling up.
電池是用強力雙面膠帶黏在背後，所以並不是很好拔，我利用右邊的錐子從電池右側的縫隙把電池拉起來。也可以用其他工具像是平起子。
Left: new 左新的
Right: torn 右被拆下來的
After removing the proximity sensor and power cable. 卸除感光及電源排線後
組合影片（時間拉到中間7：15卸除開始）
The way to put the button back.
I kind of reference between the removing clip and reassembling clips since the steps are a bit different according to the ease of access. The power button wire set is a bit different from the one I get. It is worth noticee that One of the replaced black flat wires - the one at the bottom left hand side(has curved corner) is supposed to be located at the most bottom of all the flat black wires.The big rectangular magnet helps me retrieve my memory from the video according to the place/corner where I put the screws on it (magnet) and where they belongs to when putting back.
我來回參考了拆卸影片和組合影片，因為步驟依方便性不大一樣。影片裡面的這組開關線和我買的有點不一樣。有一點關鍵要注意的是，這組開關線中，左下這條（有一個大曲度轉彎）這放在所有黑色排線路的最下方。這時候我的大磁鐵就提供了不少功勞，分區放置螺絲在磁鐵上也幫助我回憶這些螺絲屬於哪些地方。
Now i do not need to surfer using that assistive touch on screen.
現在就不用再回去用那個小白點關螢幕了！
Fixed! Click Click!
