Method 1: Toothpicks or other small things that are not easy to break can be found at home glued with double-sided tape to stick out the dust, in the cleaning process requires very patience, and be especially careful when cleaning the sharp things that are easy to Pierce the precision parts in the phone hole, resulting in more than worth the loss.
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Method 2: You can use a fine brush to gently brush the dust in the hole to clean the dust in the phone.
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Method 3: You can take a deep breath with your mouth, and then blow out the hole, you need to be careful not to suck the dust into your nose, and close your eyes when blowing, so as to prevent dust from entering your eyes.
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Method 4: If the dust enters the inside of the mobile phone through the hole, do not clean it without authorization, you can take it to the mobile phone shop to call a professional master to clean it up