Samsung Galaxy S21
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It's not possible to turn on my phone
Solution 2 of 3: The battery is flat
You should charge the phone battery regularly to ensure that your phone is always ready for use.
Step 2 of 3
When the battery charging icon is displayed, charging is in progress.
Step 3 of 3
When the phone is turned on, you can always see the battery power level. The larger the coloured section of the battery icon, the more remaining battery power.