Suitable for: **Short-term tourists and those visiting relatives in the US:** Ideal for short trips of up to one month, ready to use immediately without the hassle of signing up for a US postpaid plan. **Business travelers:** For those needing a short stay in the US and requiring stable internet and dual-number calling (US and China), allowing for seamless handling of urgent domestic and international business. **Students during transition:** Ideal for temporary communication upon arrival in the US, followed by a long-term plan available through the ENC Mobile website or local service center. **Cost-effective number retention:** For users who need to retain a US phone number to receive bank verification codes, register overseas social media accounts (such as ChatGPT, PayPal, etc.), or maintain dual-number service (US and China), but do not require high monthly fees.

Activation is required on the official website. Receiving SMS messages is free. The validity period is one month, suitable for long-term number retention. Renewal is supported. For use in mainland China, Wi-Fi calling must be enabled. You can register for WhatsApp, Telegram, Discord, Signal, etc. (receiving verification codes via SMS or voice call is very stable).