Sony Ericsson ST18i/ST18a. This User guide is published by Sony Ericsson Mobile Communications AB or its local affiliated company,
You can download the comprehensive manuals directly from official archives: Sony Ericsson ST18i/ST18a
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: If the phone is locked or malfunctioning, power it off, then hold Volume Down + Power to enter recovery mode and select "Wipe data/factory reset". Sony Ericsson ST18i/ST18a
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: For deep technical specifications and network compatibility, see the Sony Mobile White Paper . Essential Operations