To determine if your mobile phone is original or fake, follow these practical tips: 1. Check the packaging for any signs of tampering or poor quality. 2. Verify the IMEI number with the manufacturer's database. 3. Inspect the build quality and materials used. 4. Test the phone's features and performance against known benchmarks. 5. Purchase from authorized dealers or official stores to ensure authenticity. Remember, it's essential to be vigilant and cautious when buying electronic devices to avoid counterfeit products that may compromise quality and security.