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1 year agoThat does not sound plausible to me. Typically, your own computer would be behind a router that is either doing NAT or has a firewall (probably the former). Any incoming traffic would be directed to the router without any chance of reaching your computer. Whatever you saw was either outgoing traffic or incoming traffic in response to connections initiated by your own computer.
For my phone (almost 7 years old), a thin needle to scrape out all the dust is sufficient. Pressurized air also helps.