Sony ST26i Working Instructions page 11

Disassembly
Unlock the ZIF connector by using a Front Opening Tool.
Release the flex part.
Disconnect this end of the Coaxial Cable.
Insert a Front Opening Tool as shown in picture and gently
pull upwards to release the hook.
1268-3894 Rev 2
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Sony Mobile Communications AB – Company Internal
Working Instructions (mech)
11(57)