iPhone 6S vs iPhone X
Shop iPhone
iPhone 6S
Starting at
£32.09£149.00 new
iPhone X
Starting at
£121.10£449.00 newWhat's the difference between the iPhone 6S and iPhone X?
iPhone 6S vs X comes down to the chipset, RAM and battery. Refurbished, the iPhone 6S starts at £32.09, £89.01 less than the iPhone X. The iPhone X is the newer model, released in 2017.
Refurbished from
Chipset
RAM
Battery
Screen size
Screen type
- Chipset: Apple A9 APL0898 on the iPhone 6S, Apple A11 Bionic (10 nm) on the iPhone X.
- The iPhone X has more RAM: 3 GB vs 2 GB.
- The iPhone X has a bigger battery: 2716 mAh vs 1715 mAh.
iPhone 6S vs iPhone X specs
The iPhone 6S and iPhone X differ in several key areas that suit different types of users. The iPhone 6S is a smaller phone with a lower screen resolution and a single main camera, making it a good choice if you want a compact device for everyday use. The iPhone X offers a larger and sharper screen with OLED technology and a dual main camera setup, ideal if you value screen quality and photography. The iPhone X also has more RAM and a bigger battery, which helps with smoother multitasking and longer use between charges. Storage options differ too, with the iPhone X available in larger capacities. Your choice depends on whether you prefer a smaller, straightforward phone or a larger device with advanced display and camera features.
iPhone 6S vs iPhone X price
Colour
iPhone 6S vs iPhone X battery life and software updates
Battery capacity and operating system support influence how long each device lasts on a charge and with software updates.
Battery Capacity
The iPhone 6S has a 1715 mAh battery, suitable for typical daily use when you do not rely heavily on power. The iPhone X has a larger 2716 mAh battery, better suited for longer use without charging, which can benefit users who spend more time streaming or gaming away from a charger.
Software Updates
This means both devices run versions of iOS that are not the most current, which may affect access to some recent app features and security updates equally.
Battery
Foldable
Ip rating
Software updates
Wireless charging
Year of release
iPhone 6S vs iPhone X performance
Performance depends on the chipset, RAM, and storage options. The iPhone X offers higher specifications in these areas for users who run multiple apps or need more storage.
Processor Chipset
The iPhone 6S uses the Apple A9 APL0898 chipset, sufficient for everyday tasks like browsing and messaging. The iPhone X features the Apple A11 Bionic (10 nm), a more advanced chip that supports smoother operation for more demanding apps and multitasking.
RAM Capacity
With 2 GB of RAM, the iPhone 6S is designed for standard app use and light multitasking. The iPhone X has 3 GB of RAM, which helps keep more apps active in the background and can improve performance when switching between tasks.
Storage Options
The iPhone 6S is available in 16GB, 32GB, and 64GB options, suitable for users with basic storage needs. The iPhone X offers 64GB and 256GB versions, providing more room for photos, apps, and media, fitting users who store larger files or many apps.
Chipset
RAM
iPhone 6S vs iPhone X screen
Screen size, resolution, and display type affect how content looks and how much space you have for viewing. The iPhone X provides a larger and sharper screen with a different panel technology.
Screen Size and Resolution
The iPhone 6S has a 4.7 inch screen with a resolution of 750 x 1334 pixels, offering a clear display suitable for everyday viewing. The iPhone X has a larger 5.8 inch screen with a higher resolution of 1125 x 2436 pixels, delivering more detail and room for video, reading, and gaming.
Screen Type
The iPhone 6S uses an IPS LCD screen that provides accurate colours and good viewing angles. The iPhone X features a Super Retina OLED display, which offers deeper blacks and more vibrant colours, enhancing movie watching and photo viewing experiences.
Resolution
Screen size
Screen type
iPhone 6S vs iPhone X camera
Camera setup and front camera resolution influence photo and video capabilities. The iPhone X offers additional camera features for users focused on photography.
Main Camera Setup
The iPhone 6S has a single 12 megapixel main camera, suitable for standard photography needs. The iPhone X offers a dual 12 megapixel main camera setup, which supports advanced photo techniques and zoom options for users who want more versatility.
Front Camera
The iPhone 6S has a 5 megapixel front camera for selfies and video calls. The iPhone X features a 7 megapixel front camera, providing higher resolution images for better detail in selfies and video chats.
Camera type
Front camera
Main camera
iPhone 6S vs iPhone X size and design
Other practical details such as physical size, weight, connectors, and network compatibility may affect your daily use and comfort with each device.
Physical Dimensions and Weight
The iPhone 6S measures 138.3 mm in height, 67.1 mm in width, and 7.1 mm in depth, weighing 143 g. Its smaller size and lighter weight make it easier to hold and pocket. The iPhone X is larger at 143.6 mm tall, 70.9 mm wide, and 7.7 mm deep, weighing 174 g, which may suit users who prefer a bigger screen and do not mind a heavier phone.
Connector Types
The iPhone 6S includes both a Lightning connector and a 3.5mm headphone jack, offering compatibility with wired headphones without an adapter. The iPhone X uses only a Lightning connector, which means you may need wireless or Lightning headphones.
Carrier and Network Compatibility
Both the iPhone 6S and iPhone X are unlocked for use with any carrier and support 4G mobile networks. Each uses a physical SIM card, so you can choose your network provider freely and switch SIM cards if needed.
Carrier compatibility
Connector
Depth
Height
Mobile network
Release date
SD card slot
SIM card
Weight
Width
iPhone 6S or iPhone X: which should you buy?
Buy the iPhone 6S if
- you want to spend less: it starts at £32.09, £89.01 less than the iPhone X
- you want a lighter build (143 g vs 174 g)
- you want a headphone jack
Buy the iPhone X if
- you want more RAM (3 GB vs 2 GB)
- you want a bigger battery (2716 mAh vs 1715 mAh)
- you want a bigger screen (5.8 inch vs 4.7 inch)
What our customers say
Customers who chose the iPhone 6S often highlight its condition as looking like new and describe it as a good-quality phone for everyday use. Many comment on its lighter weight and compact size, which some find comfortable. Battery life is mentioned occasionally, with some users noting the battery health can vary but others reporting it lasts all day. The camera and screen meet the needs of users looking for a straightforward, reliable device, and its simple setup and ease of use appeal to a range of ages.
Reviews for the iPhone X focus on its smooth performance and the quality of the larger, sharper screen. Users appreciate the phone's camera capabilities and storage options, especially for photos and apps. Some mention higher battery capacity helps with longer use, and the phone feels like new in appearance and function. A few users express frustration with software limitations related to iOS updates, but many report the phone runs well for their needs. The device suits those who want a more advanced smartphone experience without the latest software.
In summary, the iPhone 6S suits buyers who want a smaller, simpler phone for everyday tasks with a familiar design and headphone jack. The iPhone X fits users who prefer a larger screen, enhanced camera features, and more memory for apps and media, accepting some trade-offs in size and connector type.
iPhone 6S vs iPhone X FAQs
iPhone 6S vs X comes down to the chipset, RAM and battery. Chipset: Apple A9 APL0898 on the iPhone 6S, Apple A11 Bionic (10 nm) on the iPhone X. The iPhone X has more RAM: 3 GB vs 2 GB.
The iPhone 6S is cheaper refurbished, from £32.09 compared with £121.10 for the iPhone X.
The iPhone X has a bigger battery: 2716 mAh vs 1715 mAh.
Both have the same main camera: 12 megapixels.
Updates for the iPhone 6S ended in Mar 2025. Its last version is iOS 15. Updates for the iPhone X ended in Mar 2025. Its last version is iOS 16.
The iPhone X adds more RAM (3 GB vs 2 GB), a bigger battery (2716 mAh vs 1715 mAh) and a bigger screen (5.8 inch vs 4.7 inch). Refurbished, it costs £89.01 more (from £121.10 vs £32.09).
Refurbished, the iPhone 6S comes in 16GB, 32GB and 64GB, and the iPhone X in 64GB and 256GB.
