iPhone 6 vs iPhone 6s – What’s The Difference?


iPhone 6 vs iPhone 6s

Apple released the iPhone 6 in 2014 and the iPhone 6s followed in 2015. They both look very similar, so what are the main differences? Let’s investigate…


It’s more or less impossible to tell the difference between an iPhone 6 and iPhone 6s in person. Both phones look identical. But there are some pretty major differences on the inside that make the iPhone 6s a vastly superior device.

These are the main differences between the iPhone 6 and the iPhone 6s:

  • 3D Touch
  • Better camera
  • Live Photos
  • Faster processor
  • More RAM

However, if you’re reading this is 2021, we need to get real: both of these phones are now ANCIENT and while both will still function, meaning you could technically still use them, neither will get any more iOS updates.

And that is bad. Why?

Well, you’ll miss out on new features and the latest security patches and fixes. But that’s not even the worst thing.

The worst thing is that, by 2021 standards, the iPhone 6 and 6s are now grossly under-specced to handle modern applications and games. Again, you can still run them but performance will be sloppy. And some apps will simply stop working.

My advice? Go with one of these iPhones – it’s 2021 and the game has changed.

OK, but HOW do the iPhone 6 and 6s compare? That’s why you’re here, so let’s get stuck into the details of what makes these phones tick and what makes them so different, despite their very similar exteriors…

The iPhone 6, meanwhile, lacks 3D Touch, has an inferior, though still fairly potent CPU, a less powerful camera, less memory, and is made from less durable materials.

Should you be using or buying the iPhone 6 or iPhone 6s in 2021?

Absolutely not. Apple has now officially stopped supporting both phones, so if you got yourself either the iPhone 6s or iPhone 6 today, you would not get any new iOS updates.

If you want a cheaper iPhone, meaning an older model, but one that will still get iOS updates for years to come, your best bet are the following models:

You can, of course, still use the iPhone 6 and iPhone 6s. But you’ll just have to live without iOS updates, leaving you a couple of options.

The first is to jailbreak the phone, so you can run it long term without Apple’s help.

And the second is to simply carry on using it as is, although this approach is risky because new iOS updates contain security updates and without the latest security patches and updates, you leave yourself potentially exposed to hackers and scammers.

For this reason, it is probably advisable to upgrade your phone – either to a new iPhone model or something from Samsung or another Android phone brand.

Again, remember, you can pick up refurbished iPhones for around 40% less than the cost of a new phone, so you could grab the iPhone XS, for instance, for around $400 – maybe less. If money’s tight, this is a great way of NOT locking yourself into an expensive 24 month payment plan with a carrier.

If you can remember back to when the iPhone 6 and iPhone 6 Plus first landed, you’ll remember there being plenty of reports about iPhone 6 Plus bending – this was commonly referred to as “bendgate”.

With this PR disaster firmly in the back of Apple’s mind when its designers and engineers set about designing the iPhone 6s and the iPhone 6s Plus, they were careful to use higher-grade aluminum that was not only more durable but also much less bendy.

iPhone 6 vs 6s – The Main Differences

iPhone 6 vs iPhone 6s

The key differences between the iPhone 6s and the iPhone 6, however, meaning the ones that you, the user, will notice the most are the introduction of 3D Touch, the improvements Apple made to the camera, and the performance of the processor – Apple’s iPhone 6s CPU was around 20% faster and more efficient than the one used in the iPhone 6.

  • Camera – The iPhone 6 featured an 8MP rear camera and a 1.2MP camera on the front. The iPhone 6s featured a massively updated 12MP camera on the rear and a 5MP on the front. This huge update vastly improved the iPhone 6s’ imaging capabilities and represented one of the first times Apple’s iPhone became known for its camera performance
  • Memory (RAM) – The iPhone 6s was the first iPhone to ship with more than 1GB of RAM; it had 2GB of RAM. The iPhone 6, meanwhile, shipped with only 1GB of RAM. This is the main reason why Apple’s iPhone 6s performed so much better than Apple’s iPhone 6; that, and the fact it used Apple’s newer A9 CPU.
  • 3D Touch – The iPhone 6s was the first iPhone to feature 3D Touch, a new type of UX element that allowed the user to use multiple variations of presses to access certain things on the iPhone screen. For instance, with 3D Touch, you quickly pull up options from app icons like Search Nearby or Mark My Location in Apple Maps without actually opening the app. It took a while to get used to but quickly became one of Apple’s most popular new features ever!
  • A9 CPU – The A9 CPU was a quantum leap forwards for performance over the A8. The A9 found inside the iPhone 6s was 70% faster than the A8 CPU found inside the iPhone 6. Not only that but it also had a GPU that was 90% faster too. Combine this with the iPhone 6s’ extra RAM, and it is easy to see why the iPhone 6s is so much faster than the iPhone 6.

These are all covered in detail inside our iPhone 6s & iPhone 6s Review, so if you’d like to know more about how the iPhone 6s range performed across the board, make sure you check that out. And if you’re curious about how the iPhone 6s and iPhone 6’s specs compare, we’ve provided a full list of both handsets’ specs below.

iPhone 6 Specs

  • Weight: 129g
  • Dimension: 138.1 x 67 x 6.9 mm
  • Screen size: 4.7-inch
  • Resolution: 750 x 1334
  • CPU: Apple A8
  • RAM: 1GB
  • Storage: 16/32/64/128GB
  • Battery: 1810mAh
  • Rear camera: 8MP
  • Front camera: 1.2MP

iPhone 6s Specs

  • Weight: 143g
  • Dimension: 138.3 x 67.1 x 7.1mm
  • Screen size: 4.7-inch
  • Resolution: 750 x 1334
  • CPU: Apple A9
  • RAM: 2GB
  • Storage: 16/32/64/128GB
  • Battery: 1715mAh
  • Rear camera: 12MP
  • Front camera: 5MP

iPhone 6 vs 6s Size – What’s The Difference?

  • iPhone 6 Dimensions: 138.1 x 67 x 6.9 mm
  • iPhone 6s Dimensions: 138.3 x 67.1 x 7.1 mm

The iPhone 6 and iPhone 6s are remarkably similar in the way they look; they have the same size display (4.7in), the same display spec, and similar camera modules (single 8MP sensor). Visually, the phones look almost identical. But they’re not…

As you can see above the iPhone 6s is ever-so-slightly thicker than the iPhone 6 (7.1mm vs 7.9mm), and the reason for this is 3D Touch. Adding the sensor to the 6s’ display made it slightly thicker which, in turn, made the phone’s chassis thicker.

Will you notice this difference? Hardly. Although I do think the iPhone 6s feels a little more sturdy in the hand than the iPhone 6, not that this is a bad thing. I actually prefer it when my phones have some heft about them, especially when the difference in actual weight is quite pronounced (143g vs 129g).

Performance

When the iPhone 6s came out, it picked up where the iPhone 6 left off, adding in more performance, more processing power, and more useful features like 3D Touch. It wasn’t a reinvention of the iPhone 6, more a refinement.

But the iPhone 6s does have more performance power than the iPhone 6, as you can see in the benchmarks below.

iphone 6 vs 6s benchmarks

In the real-world, the difference might be hard to spot. Apps will open quicker and switching around iOS might feel a little snappier. If you’re coming from an even older iPhone, like the iPhone 5, the iPhone 6s will feel like a massive update.

I had both the iPhone 6 and iPhone 6s and while I did like the phones, I didn’t really think find too many things to get excited about with the 6s. Yes, 3D Touch was unique and useful, but that was about it really for USPs for the 6s.

In 2021, neither of these phones cut the mustard, however, and neither will be getting any more iOS updates, so performance issues aside, both of these phones are now effectively dead anyway.

Once you’re outside the iOS ecosystem and you’re not getting regular updates, you’ll miss out on new features and important security updates. And while you can live without new features, you really shouldn’t live without the latest security features. Now more so than ever.

Storage Options & Memory

Both the iPhone 6 and iPhone 6s are available in the following storage options: 16GB, 32GB, 64GB, 128GB. In this respect, both phones are identical and, of course, the higher the storage model, the higher the cost.

The iPhone 6 shipped with 1GB of RAM, while the iPhone 6s ships with 2GB of RAM. That means, with the iPhone 6s, you have more than twice the memory. And this, along with its newer chipset, is where all that additional performance comes from.

Here’s what Apple had to say about the iPhone 6s’ performance uplift at launch, back in 2014:

“The only thing that has changed with iPhone 6s and iPhone 6s Plus is everything — 3D Touch lets users interact with iPhone in entirely new and fun ways, and the innovative Live Photos brings your pictures to life,” said Philip Schiller, Apple’s senior vice president of Worldwide Marketing. “These are the most advanced iPhones ever, with 7000 series aluminium, ion-strengthened glass, the new 64-bit A9 chip, 12-megapixel iSight and 5-megapixel FaceTime HD cameras, faster Touch ID, LTE and Wi-Fi. Customers are going to love them.”

Battery Life

  • iPhone 6 Battery – 1810mAh
  • iPhone 6s Battery – 1715mAh

The iPhone 6 runs a slightly larger battery than the iPhone 6s but, because the iPhone 6s runs a newer, more power-efficient chipset, there is no difference. Both phones will require a top up mid-way though the day, however, if you plan on going out after work.

This is just a fact of life with phones this size. In order to get through a full day on a single charge, you will need a larger battery – like the one used inside the iPhone 6s Plus.

Neither phone is great in the battery department. For the longest time, battery life was my biggest issue with using iPhones. The iPhone 6 Plus and iPhone 6s Plus fixed this, however, bringing 1.5 day battery life to iPhones for the first time.

As always, with batteries, bigger is always better. If battery life is important to you, you’ll want to go with a Plus model – Apple’s standard iPhones simply do not cut it in the battery department. Not compared to phones from OnePlus and Samsung, anyway.

Should You Still Buy An iPhone 6 or 6s?

It’s 2021 now, and both of these phones are very old. Even the newer iPhone 6s is now over five years old:

The iPhone 6s is the better phone but neither are recommended buys in 2021 – things have moved on A LOT in the last five years.

Apple’s iPhone SE (2020) is a great option for those looking to pick up a new iPhone, just for around half the price of the iPhone 11 Pro Max. The iPhone SE (2020) can be had for $399/£419 outright and is available on a range of relatively cheap contracts (which you can see here).

Another option would be to buy a refurbished iPhone; doing this will let you buy a newer, higher spec iPhone – like the iPhone X or iPhone XS – for around 40% less normal. And do not be put off by them being refurbished; they look and function as good as new – they just can’t be sold as new because they’re either been used briefly or returned to the manufacture for some reason.

Me personally? I’ve bought loads of refurbished tech over the years – from phones to laptops. If you’re interested in doing this I’d strongly recommend you check out our guide on the best places to buy refurbished iPhones – it covers everything you need to know!

Sharing is Caring!
KnowYourMobile
KnowYourMobile
@knowyourmobile.com@www.knowyourmobile.com

Your no bullsh*t guide to tech and tech trends, with a focus on data privacy and the open web

2,322 posts
0 followers

Latest Smartphone Releases


  • Xiaomi 15S Pro

    The Xiaomi 15S Pro didn’t come with a flashy launch, but it brings some seriously heavy hardware to the table. A custom 10-core chip, Leica-engineered cameras, and one of the brightest displays on the market

  • Samsung Galaxy S25 Edge

    At just 5.8mm thick, it’s one of the thinnest Android phones ever made—but don’t let the slim profile fool you. This phone is all flagship under the hood.

  • Nothing Phone (3a) Pro

    It’s got the same slick design and OLED display, but adds a periscope zoom camera and a 50MP front-facing shooter.

  • Nothing Phone (3a)

    The Nothing Phone (3a) nails the formula: give people what they actually want, keep the price low, and make it look cooler than anything else in its class.

  • Motorola EDGE 60 Pro

    With a bold design, flagship-like display, and surprisingly refined camera system, it’s one of the most interesting mid-range phones of 2025.

  • Google Pixel 9

    I’ve been using the Pixel 9 for a few weeks now, and honestly? It nails all the basics—and a bit more. Killer stuff all round!

  • Google Pixel 9 Pro

    I’ve used the Pixel 9 Pro as my daily device, and it’s hands-down the best balance of power, practicality, and photography you’ll find on Android right now.

  • OnePlus 13

    I’ve been using the OnePlus 13 as my daily driver for a few months now—and I’ve got to say, it’s easily one of the best Android phones I’ve tested this year.

  • Xiaomi 15 Ultra

    After using the Xiaomi 15 Ultra for over a week, I can confidently say: this phone is an absolute beast. It’s made for camera nerds, power users, and creators.

  • iPhone 16 Pro Max

    If you’ve been holding out for a truly complete iPhone, the 16 Pro Max delivers—hard. After using it daily, I won't be going back…

  • Google Pixel 9 Pro XL

    Big screen, big battery, and even bigger brains—this is the Pixel to get if you want Google’s best hardware and longest support.

  • Google Pixel 9a

    The Pixel 9a brings Google’s flagship-level smarts to a budget-friendly package, and it’s easily one of the best-value Android phones of 2025.

Best SIM-Only Plans & Deals


  • Boost Mobile Unlimited Premium Plan

    Boost’s top-tier option brings the heat: 50GB of premium data, hotspot, North America roaming, global talk & text, and $430 off select devices. All-in at $60/month with no contract.

    +

    Data: Unlimited (50GB premium speed)

  • Boost Mobile Unlimited+ Plan

    Level up with 40GB of premium data, hotspot access, global calling, and up to $300 in device savings. All for just $50/month. No contracts and flexible phone options included.

    +

    Data: Unlimited; Speed Caps After 40GB

  • Boost Mobile Unlimited Plan

    Start strong with 30GB of premium data, unlimited everything, and a killer intro offer: just $15/month for the first 3 months, then $25/month forever. No contracts. No fluff. Big value.

    +

    Data: Unlimited (Speed Caps Over 30GB)

  • iD Mobile 1 Month SIM-Only: 108GB

    Another high-data, low-cost option with no contract. 108GB for just £9, full 5G access, and the same goodies you get with 12-month deals.

    +

    Data: 108GB

  • iD Mobile 1 Month SIM-Only: 20GB

    The lowest price option. 20GB for £6 with all the same perks as pricier plans. Great if you don’t use much data and want to save every penny.

    +

    Data: 20GB

  • iD Mobile 1 Month SIM-Only: 110GB

    This plan gives you big data and zero commitment. 110GB for just £10 with all perks intact. If you need more data but want the freedom to cancel, this is the one.

    +

    Data: 110GB

  • iD Mobile 1 Month SIM-Only: 60GB

    More data, same price. For just £8/month, you get 60GB on a no-strings 1-month rolling plan. Ideal for users who stream often but don’t want long commitments.

    +

    Data: 60GB

  • iD Mobile 1 Month SIM-Only: 40GB

    Perfect if you want full flexibility. You get 40GB and all of iD Mobile's perks with no lock-in, annual increases, or setup fees. Great for short-term users.

    +

    Data: 40GB

  • iD Mobile 12 Month SIM-Only: 60GB

    One of the best pound-per-GB plans around. You get 60GB for £8 with £25 cashback, which means you’re effectively paying closer to £6/month. Includes roaming and data rollover.

    +

    Data: 60GB

  • iD Mobile 12 Month SIM-Only: 108GB

    This deal gets you a healthy 108GB of 5G data for less than a tenner, with no upfront costs and £24 cashback. All the perks are included too: data rollover, roaming, and loyalty rewards.

    +

    Data: 108GB

  • iD Mobile 12 Month SIM-Only: Unlimited Data

    This iD Mobile plan doesn’t just compete on price, it’s up there with the best of them. Unlimited everything, a year-long lock-in with no price rises, and £42 cashback straight to your pocket. It’s like getting nearly 3 months free.

    +

    Data: Unlimited, No Speed Caps

  • Mint Mobile 20GB Plan

    If you're looking to save some cash on your bills, this plan is an awesome option. You'll get 20GB of data per month and 20GB hotspot data allowance. For moderate to heavy users, that should be more than enough. I seldom use more than 10GB of data a month, and I'm always using my phone

    +

    Data: 20GB