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Samsung Galaxy A15 5G smartphone in Blue Black finish

SAMSUNG

SAMSUNG Galaxy A15 5G 128GB Blue Black SM-A156U (T-Mobile) - cell phones - unlocked

SKU CH-3Y9D-EFJB3

An unlocked 5G phone with 128 GB storage, an 800-nit display and Knox security, locked to T-Mobile and sold new with a cable

  • Smooth viewing on a bright 800-nit display
  • 128 GB built-in storage plus microSD expansion
  • Knox Security safeguards personal data
  • Super Fast Charging powers the battery quickly
  • Unlocked and compatible with T-Mobile only

Samsung Galaxy A15 5G 128GB

The Samsung Galaxy A15 5G is an unlocked smartphone designed for T-Mobile network compatibility. It provides 128GB of internal storage with support for up to 1TB of expandable storage. Knox Security safeguards sensitive data. The device features a bright display reaching 800 nits for clear visibility.

128GB storage with microSD expansion

The 128GB internal capacity stores apps, photos and videos directly on the phone. A microSD card slot adds up to 1TB of extra space for larger media libraries. This combination reduces the need to offload files frequently. Knox Security protects the stored data on both internal and external memory.

Everyday use within storage and network limits

The handset handles daily tasks such as streaming, browsing and social media comfortably. Super Fast Charging reduces downtime between charges. The T-Mobile lock means the phone will not operate on other carrier networks. Storage heads-up: heavy offline media collections may eventually exceed the combined 128GB internal plus 1TB expandable limit.

How it compares

Measured against everything we stock in Unlocked Smartphones, at today’s prices. Recalculated every night.

Price $80.99
Cheaper than about 74% of the 2,409 comparable items (median $168.99).

Specifications

No published specifications for this item yet.

Questions about this item

Will the battery need replacing after a year of daily charging?

The battery is not user-replaceable; Super Fast Charging reduces plug-in time but long-term capacity loss will require professional service.

What limits screen visibility during long outdoor sessions?

The 800-nits peak brightness and Vision Booster help, but sustained direct sunlight can still wash out the display.

How warm does the phone get when streaming video for hours?

Extended streaming will warm the chassis; the design has no active cooling so heat dissipates passively through the back.

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