How do I start a heating session on the IQOS ILUMA ONE?
Press and hold the button for at least one second until the IQOS ILUMA ONE vibrates and the status light or lights flash. Keep the TEREA tobacco unit in position during preheating, and begin using it once the device vibrates again and the lights remain steady.
From the official Iqos Ast 020744 Iluma One manual, page 12
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