Product Description: Mini Button Phone Unlocked Dual SIM Card 2G GSM Low Radiation BT Dialer Music Player with Voice Changer Smallest Mobile Phone Grey Mini Mobile Phone: Discover the world's smallest BT unlocked 2G GSM mini cell phone. Despite its incredibly compact size, this phone is packed with full functionality, making it both convenient and practical for everyday use. Dual SIM Card Support: Enjoy the flexibility of dual SIM Nano card support, or opt for one SIM card and one small memory card (not included). This feature allows you to manage multiple numbers or expand your storage effortlessly. Music Player and BT Headset: Experience the versatility of a BT music player that can also be used as a BT headset. Hang it up and enjoy your favorite tunes anytime, anywhere, with the convenience of wireless listening. Low Radiation: Prioritize your health with a phone that emits only 1/7 of the radiation compared to average smartphones. This feature is especially beneficial for protecting pregnant women and babies from signal radiation. Voice Changer Function: Add a fun twist to your calls with the voice changer function. Easily alter your voice during conversations (SIM card required), providing entertainment and privacy. Band (2G): Compatible with GSM 850, 900, 1800, 1900MHz frequencies, this phone supports 2G, 3G, 4G, and 5G SIM cards, provided they support 2G GSM frequency. Please ensure your SIM card supports the 2G network when using this phone as a standalone device, as some carriers have phased out 2G and 3G networks.