Samsung Galaxy S21 Ultra 128GB — Grade B+ · Good — Lot of 10. Good — moderate scratches/scuffs; minor edge wear; no cracks. Tested functional. Works on all major US carriers — AT&T, T-Mobile, Verizon & their MVNOs (Mint, Cricket, Visible, Metro). Unlocked (GSM + CDMA) · 5G · nano-SIM + eSIM. IMEI verified · iCloud-clean · MDM-free · 80%+ battery · BIS-711 export compliance · USA-based supply · 30+ years in business · 6-month functional warranty Volume tiers: 10 / 50 (1% off) / 100 (2% off) / 250+ (3% off) — final pricing in direct conversation.