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<concept id="GUID-85AE95DD-D8C0-5F38-9A98-2F92328162E7" xml:lang="en"><title>Using ECom and plug-ins in phone ROMs</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>This section describes how phone integrators and builders of phone ROMs can best deploy ECom and plug-ins in phone ROMs. It discusses how to optimise how ECom starts-up and discovers plug-ins, and how to upgrade and remove plug-ins through the use of composite ROMs. </p> </conbody></concept>