Step Name | Description | Expected
| Step 1 | Partner1 makes a call to MUT. | Dial out.
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| Step 2 | MUT answers the call. | Call is established successfully.
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| Step 3 | Touch the corner of phone with hand | Screen went black.
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| Step 4 | Partner2 makes a call MUT. |
| | |
| Step 5 | MUT answers the call. | Conference call is established among Partner1,2,MUT.
| | |
| Step 6 | Move away with hand from sensor. | The screen light on.
| | |
| Step 7 | End the conference call | The call is ended successfully.
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