mobile proximity sensor not working

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2:17

5:17

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3:58

5:57

1:54

9:35

5:19

6:14

1:00

3:09

2:41

5:42

00:47

5:31

1:56

1:57

8:37

2:53

2:21

3:10

1:48

2:39

5:06

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3:56

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3:13

5:00

3:23

2:34

5:23

4:11

4:41

1:18

2:53

1:00

3:00

3:09

3:25

9:34

2:17