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iPhone 12 Pro vs iPhone 6S

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iPhone 12 Pro

Starting at

£274.51£879.00 new
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iPhone 6S

Starting at

£32.09£149.00 new
See options
(299 reviews)
(507 reviews)

What's the difference between the iPhone 12 Pro and iPhone 6S?

iPhone 12 Pro vs 6S comes down to the chipset, RAM and battery. Refurbished, the iPhone 6S starts at £32.09, £242.42 less than the iPhone 12 Pro. The iPhone 12 Pro is the newer model, released in 2020.

Refurbished from

£274.51£32.09

Chipset

Apple A14 Bionic (5 nm)Apple A9 APL0898

RAM

6 GB2 GB

Battery

2815 mAh1715 mAh

Screen size

6.1 inch4.7 inch

Screen type

Super Retina XDR OLEDIPS LCD
  • Chipset: Apple A14 Bionic (5 nm) on the iPhone 12 Pro, Apple A9 APL0898 on the iPhone 6S.
  • The iPhone 12 Pro has more RAM: 6 GB vs 2 GB.
  • The iPhone 12 Pro has a bigger battery: 2815 mAh vs 1715 mAh.

iPhone 12 Pro vs iPhone 6S specs

The iPhone 12 Pro and iPhone 6S offer very different experiences suited to different needs. The iPhone 12 Pro suits you if you want a larger, sharper screen and more powerful performance with 6 GB of RAM and the Apple A14 Bionic chipset. The iPhone 6S is a simpler choice with a smaller screen and 2 GB of RAM, designed for everyday use and those who prefer a lighter phone. Its physical headphone jack and lower-priced storage options make it a practical pick for basic smartphone needs.

iPhone 12 Pro vs iPhone 6S price

iPhone 12 Pro vs iPhone 6S battery life and software updates

Battery capacity, software updates and physical size contribute to how these phones handle daily use. The iPhone 12 Pro and iPhone 6S differ in these ways, which affects how long they last and how current they stay.

Battery Capacity

The iPhone 12 Pro has a 2815 mAh battery, which holds more charge than the 1715 mAh battery in the iPhone 6S. This means the 12 Pro can support longer use between charges, suitable if you rely on your phone throughout a busy day. The 6S battery is smaller, which suits lighter use or shorter days away from a charger.

Software Updates

This difference matters if you want the latest apps and system enhancements.

Physical Dimensions

The iPhone 6S is slightly smaller and thinner, measuring 138.3 mm in height, 67.1 mm in width, and 7.1 mm in depth, weighing 143 g. The iPhone 12 Pro is taller, wider, and a bit thicker, at 146.7 mm by 71.5 mm by 7.4 mm, and weighs 187 g. The smaller size and lighter weight of the 6S may suit those who want a compact phone.

Battery

2815 mAh1715 mAh

Foldable

NoNo

Ip rating

IP68N/A

Software updates

Supported, up to iOS 27Ended Mar 2025, last iOS 15

Wireless charging

YesN/A

Year of release

20202015

iPhone 12 Pro vs iPhone 6S performance

Processor speed, memory and storage affect how smoothly a phone runs, how many apps stay open, and how much you can save. The iPhone 12 Pro and iPhone 6S differ notably here, which suits different types of users.

Processor and RAM

The iPhone 12 Pro runs on the Apple A14 Bionic chipset with 6 GB of RAM. This supports faster processing and multitasking with more apps open at once. The iPhone 6S has the Apple A9 chipset and 2 GB of RAM, which suits everyday tasks and lighter app use.

Storage Options

Storage on the iPhone 12 Pro ranges from 128GB to 512GB, offering ample space for apps, photos and files. The iPhone 6S comes in 16GB, 32GB, and 64GB options, making it suitable if you need less storage or prefer a lower-priced device.

Chipset

Apple A14 Bionic (5 nm)Apple A9 APL0898

RAM

6 GB2 GB

iPhone 12 Pro vs iPhone 6S screen

Display size, resolution and screen type affect how clear and immersive your viewing experience is. The iPhone 12 Pro and iPhone 6S differ in these areas, which suits different preferences and uses.

Screen Size and Resolution

The iPhone 12 Pro has a 6.1 inch screen with a resolution of 1170 x 2532 pixels, producing a sharp and detailed image. The iPhone 6S offers a smaller 4.7 inch screen at 750 x 1334 pixels, which suits those who prefer a more compact display or one-handed use.

Screen Technology

The iPhone 12 Pro uses Super Retina XDR OLED technology, which delivers deep colours and high contrast. The iPhone 6S uses IPS LCD technology, providing good colour accuracy and brightness for general use. Your choice depends on how much you value screen quality for watching videos or viewing photos.

Refresh rate

60 HzN/A

Resolution

1170 x 2532750 x 1334

Screen size

6.1 inch4.7 inch

Screen type

Super Retina XDR OLEDIPS LCD

iPhone 12 Pro vs iPhone 6S camera

Camera capabilities and front camera resolution influence photography and video calls. The iPhone 12 Pro and iPhone 6S offer different levels of camera features tailored to different users.

Camera Setup

The iPhone 12 Pro features a triple camera system, which gives more options for photos including wide, ultra-wide and telephoto shots. The iPhone 6S has a single main camera, suitable for standard photography.

Front Camera Resolution

The iPhone 12 Pro has a 12 megapixel front camera, offering higher detail for selfies and video calls. The iPhone 6S has a 5 megapixel front camera, which covers everyday video and selfie needs.

Main Camera Resolution

Both phones have a 12 megapixel main camera, which supports good quality photos for everyday use.

Camera type

Triple (3x)Single (1x)

Front camera

12 megapixels5 megapixels

Main camera

12 megapixels12 megapixels

iPhone 12 Pro vs iPhone 6S size and design

Other features like network compatibility, connectors and physical design details may affect how you use your phone day to day. These differ between the iPhone 12 Pro and iPhone 6S.

Mobile Network

The iPhone 12 Pro supports 5G networks, which can offer faster mobile data speeds where available. The iPhone 6S supports 4G networks, which remain widely available and reliable for most uses.

SIM Card Options

The iPhone 12 Pro supports both a physical SIM card and eSIM, offering more flexibility with carriers or dual SIM use. The iPhone 6S uses a physical SIM card only.

Connector Types

Both phones use a Lightning connector for charging and data. The iPhone 6S also has a 3.5mm headphone jack, which suits users who prefer wired headphones without adapters.

Weight and Size

The iPhone 6S is lighter at 143 g and smaller in dimensions, while the iPhone 12 Pro is heavier at 187 g and larger. This affects how the phone feels in your hand or pocket.

Carrier compatibility

UnlockedUnlocked

Connector

LightningLightning + Jack 3.5mm

Depth

7.4 mm7.1 mm

Height

146.7 mm138.3 mm

Mobile network

5G4G

Release date

23 October 202025 September 2015

SD card slot

NoNo

SIM card

Physical SIM + eSIMPhysical SIM

Weight

189 g143 g

Width

71.5 mm67.1 mm

iPhone 12 Pro or iPhone 6S: which should you buy?

Buy the iPhone 12 Pro if

  • you want more RAM (6 GB vs 2 GB)
  • you want a bigger battery (2815 mAh vs 1715 mAh)
  • you want a bigger screen (6.1 inch vs 4.7 inch)

Buy the iPhone 6S if

  • you want to spend less: it starts at £32.09, £242.42 less than the iPhone 12 Pro
  • you want a lighter build (143 g vs 189 g)
  • you want a headphone jack

What our customers say

Customers who chose the iPhone 12 Pro speak highly of its condition, often describing it as looking and working like new. Many highlight the solid battery life, smooth performance, and ease of setup. Several users mention that the phone runs the latest iOS version and handles apps well, with one customer noting the battery health at 100 percent and others confirming good battery performance. Buyers appreciate the larger screen and overall quality, often recommending the phone for its reliable and consistent service.

Customers of the iPhone 6S say it feels like a brand new phone and suits everyday use well. Many are happy with the condition, describing it as immaculate or excellent. The battery performance varies more, with some noting that batteries are good and last all day, while others report weaker battery health on certain units. The phone's size and weight are appreciated, especially by those who want a simpler device or a lower-priced option. Several customers recommend the phone for basic smartphone needs and as a gift.

The iPhone 12 Pro suits those who want a larger screen, newer software, and higher performance for apps and multitasking. The iPhone 6S suits users seeking a lighter, smaller phone for everyday tasks, or those who prefer a physical headphone jack and lower storage options.

iPhone 12 Pro vs iPhone 6S FAQs

iPhone 12 Pro vs 6S comes down to the chipset, RAM and battery. Chipset: Apple A14 Bionic (5 nm) on the iPhone 12 Pro, Apple A9 APL0898 on the iPhone 6S. The iPhone 12 Pro has more RAM: 6 GB vs 2 GB.

The iPhone 6S is cheaper refurbished, from £32.09 compared with £274.51 for the iPhone 12 Pro.

The iPhone 12 Pro has a bigger battery: 2815 mAh vs 1715 mAh.

Both have the same main camera: 12 megapixels.

The iPhone 12 Pro is still supported and can run iOS 27. Updates for the iPhone 6S ended in Mar 2025. Its last version is iOS 15.

The iPhone 12 Pro adds more RAM (6 GB vs 2 GB), a bigger battery (2815 mAh vs 1715 mAh) and a bigger screen (6.1 inch vs 4.7 inch). Refurbished, it costs £242.42 more (from £274.51 vs £32.09).

Refurbished, the iPhone 12 Pro comes in 128GB, 256GB and 512GB, and the iPhone 6S in 16GB, 32GB and 64GB.

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