How to turn your Samsung Galaxy Tab A 10.1 (2016) on or off

Press and hold On/Off until your tablet is turned on.

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Key in your SIM PIN and press OK. The default SIM PIN is 0000.

If an incorrect SIM PIN is entered three times in a row, your SIM will be blocked. To unblock your SIM, you'll need to key in your PUK. Sign in to the O2 website to get the PUK. Please note: If you key in the wrong PUK ten times in a row, your SIM will be blocked permanently. In this case, you need a new SIM from O2.

Press and hold On/Off until a pop-up menu is displayed.

Press Power off.

Press Power off.