Sony Ericsson Z525i Working Instruction page 102

8. Once the portion of the main flex film containing the
vibrator contacts is free from its alignment peg, grip
the "U" shaped portion of the main flex film and
gently pull it away from the inner flip cover along
the imaginary axis that runs through the center of the
hinge concealing portion of the inner flip cover until
the main flex film separates from the inner flip
cover.
3/00021-1/FEA 209 544/597 F
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Sony Ericsson Mobile Communications AB
Step-by-Step Instructions
Working Instruction, Mechanical
102(115)