Setup, Compatibility & Care
To set up the TT990, insert your 4G-compatible SIM card into the designated slot under the battery cover. Upon first boot, follow the on-screen prompts to connect to Wi-Fi and sign in to your Google account if you wish to sync contacts. For maintenance, keep the phone away from moisture and extreme temperatures. Clean the screen with a dry, microfiber cloth to prevent smudge buildup, and ensure the charging port is free of debris. Use the provided charging cable to ensure optimal battery health and safety. Regularly check for software updates in the settings menu to maintain security and compatibility.