LG wt7700h*a Owner's Manual page 41

TAG ON FUNCTION 4-1
5, After selecting the category, a list of specific cycles
will appear. Select the cycle based on your needs,
For Blood Stains
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6, Touch the Tag On logo.
When a Tag On screen appears (see at left), tap your
smart phone on the Tag On icon on the right side of
the washer's control panel, it isn't recognized, touch
on the upper right of the Tag On screen on your
"LG Smart Laundry & DW" app to see the detailed
guide. (This might happen due to the different NFC
antenna positions for each phone,)
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7, After tagging the machine with your phone, the cycle
will automatically start, Verify the correct cycle and
settings were selected.
Images are for reference only.
The LG Smart Laundry & DW application may be
updated.