Disassembling BlackBerry 9520

I love the machine about half a year ago, a few months ago, I found that the buttons in the lower left corner (dial-up key) areas failed, and I had to press it hard to respond. On this day, my colleague Yang Xian brought professional tools:

Professional, that's a must !! Come on, start disassembling:

Step 1: remove the two screws on the back of the BlackBerry. You can find them easily. Remove the head cover and foot cover from the front. Be sure not to use too much effort. Here we stick it with glue and buckle it in the clip slot, if it is too strong, be careful to break the button.

Step 2: Open the front shell, that is, the silver-black steel shell stuck on the fuselage,

Step 3: Start to split the last layer. Pay attention to the first card slot. Here, use the Cross's marker to slowly remove it.

OK. The position of the gasket in the lower left corner is found to be offset. I don't know why. There is only a gasket in the lower left corner.

Installation, handling, abnormal and sensitive response