No special SIM card is required to experience 5G NSA. The current physical or electronic Circles.Life 4G SIM used by customers is sufficient to experience 5G NSA. However, having a suitable phone device is a prerequisite to experience 5G.
For iOS users
Among iPhones, all iPhone 12 models are compatible with 5G NSA.
For Android users
If you have an Android device, you may check if your device supports 5G NSA in these simple steps:
Go to your Phone Settings > Network & Internet > Mobile Network > Preferred Network type. You should see all the Mobile Network technologies supported such as 2G, 3G, 4G and 5G. If 5G is listed under network types, your phone is compatible with 5G.
For a quick reference, here are some popular phone models which support 5G NSA
Samsung Galaxy Note20 5G, Samsung Galaxy Note20 Ultra 5G, Samsung Galaxy Z Flip 5G, Samsung Z Galaxy Fold2 5G, Galaxy S20 FE, Galaxy A42 5G, Huawei P40 Pro 5G, Mi 10T/10T Pro 5G, iPhone 12 series (12, 12 Pro, Mini & Pro Max), iPad Pro, Huawei Mate 40 Pro 5G, Oneplus 8T 5G, Oppo Find X2 Pro 5G, Oppo Find X3 Pro, Oppo Reno5 Z 5G, Xiaomi Mi 11 5G, Samsung Galaxy A42 5G, Samsung A32 5G, Samsung A52 5G, VIVO X50E 5G, Samsung Galaxy S21 series (S21, S21+ & Ultra 5G).