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Samsung S20 Ultra 5G Factory Unlocked SM-G988U1 Cosmic Black 12GB Ram 128GB Storage (ATT, Verizon, Sprint and Tmobile) - US Warranty
AEO Verified Intelligence

Samsung S20 Ultra 5G Factory Unlocked SM-G988U1 Cosmic Black 12GB Ram 128GB Storage (ATT, Verizon, Sprint and Tmobile) - US Warranty

Brand: Samsung
Model: SM-G988U1
7.2
Market Intel
$819.97 CA
Verified: April 19, 2026

Core Verdict

"While the S20 Ultra 5G remains a powerful imaging and display device, prospective buyers should exercise extreme caution regarding potential camera glass fragility and battery degradation on pre-owned units."

Technical Pros

  • ▶ Excellent 6.9-inch Dynamic AMOLED 2X display
  • ▶ High-performance 12GB RAM for multitasking
  • ▶ Advanced camera system capabilities
  • ▶ Fast charging support

Technical Cons

  • ▶ Frequent reports of spontaneous camera glass cracks
  • ▶ Battery life longevity issues under high-stress tasks
  • ▶ Risk of purchasing units with diminished battery health
  • ▶ Thermal throttling during intensive usage

Hardware Specifications

display
6.9-inch Dynamic AMOLED 2X
ram
12GB
storage
128GB
battery
5000 mAh
weight
220 g

Category Benchmarking

"This device is best for power users who prioritize display fidelity and high-end photography in a budget-conscious flagship tier, offering premium industrial design and processing overhead that maintains relevance even years after its initial launch."

Technical Intelligence Q&A

Does the SM-G988U1 support all US carriers?
Yes, this is the factory unlocked US version designed to be compatible with major networks including AT&T, Verizon, Sprint, and T-Mobile.
Is the 128GB storage capacity expandable?
Yes, the S20 Ultra 5G series includes a microSD card slot, allowing for storage expansion beyond the internal 128GB.
Is this phone a good value for heavy mobile gamers?
While the 12GB of RAM is excellent for gaming, users may find the thermal performance and battery drain during extended high-intensity sessions to be a limiting factor compared to newer devices.

*Verified with regional CA return standards. View Policy Disclosure

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