iPhone 12 Vs iPhone 15

iPhone 12
iPhone 12
Starting at

Refurbished price:£136.00

Versus £649.00 new

See options
iPhone 15
iPhone 15
Starting at

Refurbished price:£323.00

Versus £699.00 new

See options

Ratings

The iPhone 12, introduced in 2020, and the iPhone 15, released in 2023, represent two distinct eras in the development of Apple’s smartphone technology. While both devices share the same core operating system and a similar 6.1-inch physical footprint, they are separated by three years of hardware refinement and design shifts. The iPhone 15 introduces a modern interactive display element and a universal charging standard, whereas the iPhone 12 maintains the classic design language that defined the early 2020s.

This comparison examines the practical differences between these two generations to help users decide which model aligns with their daily requirements. Whether you are looking for the latest camera capabilities or a reliable device for standard communication, understanding these hardware generations is essential for making an informed choice.

Scores

Durability

The three-year gap between these models significantly influences their long-term software compatibility and physical resilience in a modern environment.

  • Software Support Longevity: The iPhone 15 is expected to receive official operating system updates until approximately 2029 or 2030, providing a much longer window of security and feature updates compared to the iPhone 12, which is likely to reach its final update cycle around 2026 or 2027.
  • Internal Design and Repair: While both phones utilize a Ceramic Shield front for improved drop protection, the iPhone 15 features a redesigned internal structure that makes the back glass easier to replace, potentially simplifying common repairs compared to the more integrated build of the iPhone 12.
  • Practical Lifespan: Users who intend to keep their device for five years or more will find the iPhone 15 better suited for the future, whereas the iPhone 12 serves as a functional option for those who plan to update their hardware sooner.

Year of Release

2020

2023

Compatible with latest Update

Yes

Yes

OS

iOS

iOS

Foldable

No

No

Performance

While both smartphones handle everyday applications with ease, the newer internal hardware in the iPhone 15 provides a more fluid experience for demanding tasks and multitasking.

  • System Responsiveness: The iPhone 15 handles high-end mobile gaming and intensive video editing with greater smoothness and less heat generation, while the iPhone 12 may experience slight pauses when switching between multiple large applications or processing complex data.
  • Battery Efficiency: In typical daily use, the iPhone 15 offers longer runtimes between charges due to more efficient power management, whereas the iPhone 12's older hardware may require more frequent charging, especially for users who rely heavily on mobile data or navigation.
  • Multitasking Capabilities: The iPhone 15 includes more memory headroom, allowing it to keep more apps open in the background without refreshing them, which creates a more seamless experience for professionals who jump between email, documents, and web browsers frequently.

Memory

4 GB

6 GB

Screen quality

Both devices feature high-quality OLED displays that offer deep blacks and vibrant colors, but the iPhone 15 introduces significant improvements in brightness and interface design.

  • Display Interface: The iPhone 12 features the traditional notch at the top of the screen, while the iPhone 15 replaces this with an interactive area that expands and contracts to show notifications, music controls, and background activities without interrupting the main screen content.
  • Outdoor Visibility: The iPhone 15 reaches much higher peak brightness levels, making the screen significantly easier to read under direct sunlight compared to the iPhone 12, which can sometimes appear dim or difficult to see in bright outdoor environments.
  • Visual Smoothness: While both screens are sharp and clear, the iPhone 15 provides a slightly more refined viewing experience for high-definition streaming content due to its improved color accuracy and higher peak brightness for HDR video.

Resolution

1170 x 2532

1179 x 2556

Screen type

Super Retina XDR OLED

Super Retina XDR OLED

Audiovisual

The camera system is one of the most significant areas of divergence, with the iPhone 15 moving toward a high-resolution primary sensor that offers more flexibility.

  • Image Detail and Zoom: The iPhone 15 features a 48-megapixel main sensor that captures significantly more detail than the 12-megapixel system on the iPhone 12, allowing users to crop into photos or use a virtual 2x zoom without a noticeable loss in clarity.
  • Low-Light Photography: Photography in dim environments is more consistent on the iPhone 15, which produces images with less grain and better shadow detail, making it more reliable for evening events or indoor gatherings compared to the iPhone 12.
  • Video and Audio Capture: Both devices record high-quality 4K video, but the iPhone 15 includes advanced stabilization that smooths out shaky footage more effectively and features improved microphone processing for clearer voice capture during video calls and recordings.

Main camera

12 megapixels

48 megapixels

Front camera

12 megapixels

12 megapixels

Miscellaneous

Beyond the core specifications, the physical ports and connectivity standards mark a major shift in how these devices interact with other hardware and accessories.

  • Charging and Connectivity: The iPhone 15 utilizes a universal USB-C port, allowing users to use the same cable for their phone, laptop, and other modern electronics, while the iPhone 12 relies on the proprietary Lightning connector.
  • Physical Handling and Build: The iPhone 15 features slightly contoured edges and a matte glass finish that many users find more comfortable to hold without a case, whereas the iPhone 12 has sharper, flat edges and a glossy back that can be more prone to fingerprints.
  • Security and Sensors: Both devices use facial recognition for secure unlocking, but the iPhone 15 integrates these sensors into the interactive display area, providing a more modern look and feel to the user interface during daily interactions.

Weight

164 g

171 g

Screen size (in)

6.1

6.1

Network

5G

5G

SIM card

Physical SIM + eSIM

Physical SIM + eSIM

Carrier compatibility

Unlocked

Unlocked

Connector

Lightning

USB-C (USB 2)

User consensus from various technology forums suggests that the iPhone 12 remains a highly capable and reliable smartphone for standard daily tasks such as messaging, social media, and web browsing. However, many long-term users note that the battery health and processing speed of the iPhone 12 are beginning to show their age in 2026. In contrast, the iPhone 15 is frequently praised for its transition to USB-C and the interactive display area, which users find adds a fresh and modern feel to the software experience. Some users mention that while the camera is a significant step up, the overall feel of the device remains familiar to those coming from older models.

Users who prioritize having the latest connectivity standards, a camera capable of high-detail photography, and a screen that is easy to read in bright sunlight will likely find the iPhone 15 to be the better fit for their needs. Those who prefer a familiar design and only require a device for standard daily communication may find the iPhone 12 perfectly adequate for their routine. For those looking to make a sustainable choice, a quality-assured refurbished option provides an eco-friendly alternative that extends the life of these devices. Ultimately, the decision rests on whether the newer display features and universal charging are essential for your daily lifestyle or if the reliable performance of a previous generation meets your current requirements.

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