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Apple iPhone X A1901 Space Gray bar phone with 5.8 inch display

Apple

Apple iPhone X A1901 AT&T 256GB Space Gray cell phones - unlocked

SKU CH-W635-D4SG5

An AT&T-locked iPhone X with 256 GB storage and a 5.8-inch display, powered by a 2.4 GHz A11 Bionic chip and dual 12 MP cameras

  • Storage drive256 GB
  • Operating systemiOS
  • Form factorBar Phones
  • Main screen size5.8 in (14.7 cm)
  • RAM capacity3 GB
  • Product colorGray
  • 8″ Super Retina HD display with HDR and True Tone
  • A11 Bionic chip at 2.4 GHz powers iOS 15.4
  • 12 MP dual camera with dual optical image stabilisation
  • Face ID unlock and Apple Pay with a glance
  • 256 GB storage and 3 GB RAM for apps and media

Apple iPhone X A1901 AT&T 256GB Space Gray

The Apple iPhone X A1901 is a bar-style smartphone with a 5.8-inch touchscreen and 256GB of internal storage. It runs iOS 15.4 on an Apple A11 Bionic processor clocked at 2.4 GHz with 3GB of RAM. The device features a 12MP dual camera system with optical image stabilisation and a sapphire crystal lens cover. This unit is locked to the AT&T network and cannot be used with other carriers.

Build integration and network constraints

Because the handset is locked to AT&T, it requires an active AT&T SIM plan to access cellular services; it will not accept SIM cards from other networks. The 256GB of built-in storage removes the need for a microSD card, which the phone does not support. Wireless charging is supported, freeing the Lightning port for data or audio accessories. Integrated GPS provides location services without extra hardware.

Ideal for AT&T users wanting high storage

This model suits buyers who are committed to AT&T and want a high-capacity iPhone X in Space Gray with a dual-camera setup. It is not suitable for anyone who needs an unlocked device to switch carriers or travel internationally with local SIMs. Buyers who require expandable storage via memory card should look elsewhere. Those needing a newer iOS version than 15.4 or a more recent processor generation will not find that here.

How it compares

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

Price $111.99
Cheaper than about 66% of the 2,409 comparable items (median $168.99).
Storage drive 256 GB
Higher than about 70% of the 1,888 comparable items (median 128 GB).

Specifications

Product
Brand nameApple
Product lineiPhone X
Model nameA1901
Product colorGray
Memory
RAM capacity3 GB
Storage
Storage drive256 GB
Display
TouchscreenYes
Main screen size5.8 in (14.7 cm)
Connectivity
Built-in GPSYes
Size & build
Form factorBar Phones
Software
Operating systemiOS

Questions about this item

What thermal limit appears first when the A11 Bionic runs at 2.4 GHz continuously?

The A11 Bionic will throttle its 2.4 GHz clocks once the internal temperature reaches the factory-set thermal ceiling, so sustained heavy workloads will see reduced frequencies.

How much heat and fan noise does the iPhone X produce during all-day use?

The iPhone X has no fan; it relies on passive cooling, so it runs silently but the glass-and-steel chassis becomes noticeably warm under prolonged load.

Which AT&T SIM must I already have for this A1901 model to connect to the network?

This A1901 unit is locked to AT&T, so an active AT&T nano-SIM (or compatible eSIM profile) is required before the phone can register on the network.

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