Samsung Galaxy Tab A 7.0 (2016) 8 ГБ черный (SM-T 280 NZKASER) 用户手册

Basics

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1 

Tap   to open the list of recently used apps.

2 

Swipe upwards or downwards and tap   on a recent app window.
The selected app will launch in the upper window.

3 

Select another app to launch.

You can also launch the split screen view by tapping and holding  .