how to reset android to factory default

3:12

00:35

00:58

2:03

5:04

6:22

6:51

4:46

2:43

7:52

4:29

6:40

2:11

8:42

11:04

4:01

3:09

2:31

3:02

3:00

4:13

1:46

3:25

2:01

00:26

7:09

1:38

2:16

3:39

1:24

1:15

3:54

00:40

2:42

3:04

2:39

1:11

1:44

2:22

2:57

2:48

1:10

3:03

5:15

1:35

5:20

3:26

1:13

5:26

3:41

00:58

1:25

1:11

3:12

1:38

3:39

1:58

1:18

4:35

3:10