Qin F21 Pro

• T-Mobile (and companies that use T-Mobile’s network) → ✅ Best choice, works the most reliably.
• Verizon → ⚠️ May have problems like dropped calls or missed text messages. Sometimes you can fix it by calling Verizon and asking them to turn on CDMA-less mode (sometimes called a “basic phone plan”). Not every Verizon worker knows how to do this, and it only works with Verizon’s main service (not smaller Verizon-based companies).
• AT&T → ⚠️ Works but sometimes the service is a little spotty.

👉 For the smoothest experience in the U.S., we recommend using T-Mobile or a T-Mobile-based plan. If you aren't sure if your provider uses T-Mobile, ask them or reach out to us and we will tell you.

If you’re unsure, please reach out and we’ll guide you.