iPhone SE 2020 compatibility

Yes. This is from the SE 2020 Specifications, which you can easily see yourself at www.apple.com

Model A2275*

• FDD‑LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 29, 30, 66, 71)
• TD‑LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48)
• CDMA EV‑DO Rev. A (800, 1900 MHz)
• UMTS/HSPA+/DC‑HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
• GSM/EDGE (850, 900, 1800, 1900 MHz)

Yes, if you buy it from Apple and you pay for an unlocked phone, which will require to pay in full up front.

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