Cut, Copy and Paste Text - Samsung Galaxy S8 / S8+
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To cut or copy text, tap and hold the text field.
Not all text fields support cut or copy. -
Tap the desired words.
To tap the whole field, tap Select all 
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Tap one of the following:
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Cut
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Copy
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Cut
- Tap and hold the target text field.
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Tap Paste
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Not all text fields support cut or copy.
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