To activate a TNT (Talk 'N Text) SIM card, follow these steps:

1. Insert the SIM Card Insert your TNT SIM card into your phone’s SIM slot and turn on the device.
2. Automatic Activation (via Network) Wait for your phone to automatically detect the SIM card. You should receive a text message confirming the activation of your SIM card. If successful, you will be able to make calls, send texts, and use mobile data.
3. Manual Activation via Text If you don’t receive any message or if the SIM is not automatically activated, you can activate it manually. Send a text message to 1515 containing the word: SIMREG.
4. Register Your SIM Card (Philippines SIM Card Registration Act) Under the SIM Card Registration Act, you must register your SIM to activate it. Follow these steps for registration: Go to the Smart/TNT SIM Registration Portal: https://simreg.smart.com.ph Enter your TNT mobile number. Fill out the required personal details, including your name, birth date, address, and valid ID. After submitting, you should receive a confirmation of your registration and activation.
5. Activate Mobile Data If you want to use mobile data, make sure the APN settings are configured correctly. APN: internet Authentication type: PAP or CHAP Bearer: LTE (or 4G, depending on your phone's capability)
6. Check Activation To check if your SIM is fully activated, you can try: Making a call or sending a text message. Accessing the internet using mobile data. If activation doesn't work, you can contact TNT customer service by calling 888 from your TNT SIM or visiting a Smart store for assistance.