How to remove bubbles from toughened film of mobile phone?

The method of removing bubbles from the toughened film of mobile phone is as follows:

Tools: Huawei mate40pro mobile phone, HarmonyOS OS3.0, scraper, Huawei mate40pro mobile phone membrane, and sterilized paper towels.

1. Carefully observe the position with bubbles on the toughened film and wipe it repeatedly with a disinfectant paper towel.

2. After the cracks appear, scrape them off from the position near the bubbles with a scraper.

3. After the bubbles are scraped out, press the edge of the toughened film by hand.

4. Or lift a gap and scrape it with a scraper from the position close to the bubble.

5. After the bubbles are scraped out, press the edge of the toughened film by hand.