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YIFA LIU
YIFA LIU  created a new article
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In this case, you can use a cell phone blocker | #cell phone jammer

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In this case, you can use a cell phone blocker

In addition, everyone who has experienced important exams will see that it will also be open to the public during important exams to prevent students from using electronic devices such as mobile phones. Children use mobile phones as a tool to prepare for exams. To prevent cheating in exams
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