To distinguish the authenticity of TF5 1, you can check the logo and security code on the product packaging. The package of TF5 1 should have the trademark and product model of the phone, as well as the anti-counterfeiting mark and anti-counterfeiting code of the product, which can be verified by official website or customer service. In addition, it can also be distinguished by looking at the appearance, weight, feel and performance of the product during use. In case of doubt or uncertainty, it is recommended to purchase or consult customer service through official channels to ensure that the purchased products are genuine.