OTOKY New Mens Couple Ring Technology NFC Smart Digital Ring for Android Phone Functional Stainless Steel Ring OTOKY 2021 New Mens Couple Ring Technology NFC Smart Digital Finger Ring for Android Phone Functional Stainless Steel Ring [Commodity packaging] opp bag Chip model: NTAG213 NFC smart ring application APP; support Android system mobile phone NFC function use; does not support Apple mobile phone Product NFC smart chip ring is a fashionable wearable electronic product that connects with mobile phone through nfc wireless radio frequency communication technology to operate mobile phone functions and share data. It does not require any power supply and has high-level waterproof performance. The ring has built-in nfc chip, Requires mobile phone with nfc function to use it, feature: Status: new Type: NFC smart ring Material: titanium steel + NFC smart chip Gender: Female, Male Color: black and white Size (all US sizes available): 6/7/8/9/10 Packing list: 1 ring feature: Product The smart ring is a fashionable and wearable electronic product that can be connected with a smartphone through Near Field Communication (NFC) to complete function execution and data sharing. With advanced waterproof design, it can be used without any power supply. Built-in NFC chip, can only be connected to a smartphone with NFC function. Detailed operation: Put the smart ring in the NFC area of the smartphone, you can perform: screen unlocking, application lock unlocking, application quick launch, business card and URL information sending and reading, etc. Instructions for use: (you can see pictures and videos) (1) First check whether the mobile phone has nfc function. Generally, the nfc switch of the mobile phone is in the system settings of the mobile phone. If the user does not find the nfc function option of the mobile phone, please contact the mobile phone manufacturer for after-sales service or Baidu to search for the corresponding mobile phone model with nfc function, and confirm Mobile nfc signal area. (2) If the mobile phone has the nfc function, turn on the nfc switch, search for the nfc function of the software in the application software market, download and install it, and follow the prompts on the software. (3) Open the downloaded nfc software and follow the software prompts above. (4) Since nfc is near field communication, when reading any task, be sure to ensure that the ring chip is positioned close to the nfc signal area of the mobile phone, otherwise it may not be able to read and write normally.