(Pocket-lint) - The smartphone market is as crowded as ever - there's plenty of choice, almost too much in fact.

If you're reading this feature, you have at least narrowed your options down to Apple's iPhone. Even that isn't totally simple, though, with a range of models to choose from.

Apple offers the iPhone SE, the iPhone XR, the iPhone 11, iPhone 11 Pro and the iPhone 11 Pro Max. With five options, the big question is which one is the one for you? Let us explain the differences to help you figure out where you should spend your cash.

The iPhone 11 is the base model of the most recent range of iPhones, offering a dual camera, aluminium build, six colour options, IP68 water and dust resistance and a processor and battery bump over the older iPhone XR.

The iPhone 11 Pro has the same hardware as the iPhone 11 but it offers a more premium build, a triple rear camera and an OLED display that is mobile HDR compatible. There are a few extra camera features onboard compared to the iPhone 11 too.

The iPhone 11 Pro Max is the iPhone that has it all. The hardware and features are the same as the iPhone 11 Pro, but it offers everything in a larger package with a 6.5-inch OLED display. This larger package comes at a price though, because the iPhone 11 Pro Max is the most expensive iPhone available.

The iPhone XR is the entry-level model into the Face ID iPhones with an all-screen front design and Face ID over Touch ID. While it has a more advanced display filling most of the front of the phone, it has the oldest core hardware of all the current phones offered by Apple. It offers a single camera on the rear.

The iPhone SE (2020) is Apple's newest affordable phone. It carries over the design from the iPhone 8, so the display isn't quite as impressive as the other models currently available, but it does have the latest core hardware, the same as the iPhone 11 models. It has a single camera on the rear.

Dimensions: 150.9 x 75.7 x 8.3mm, 194g, IP68 water resistant

150.9 x 75.7 x 8.3mm, 194g, IP68 water resistant Display: 6.1-inch, 1792 x 828 (326ppi), Haptic Touch, True Tone, HDR

6.1-inch, 1792 x 828 (326ppi), Haptic Touch, True Tone, HDR Storage: 64GB, 256GB, 512GB

64GB, 256GB, 512GB Battery: Up to 17 hours

Up to 17 hours Colours: Black, Green, Yellow, Purple, White, Product(RED)

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The Apple iPhone 11 takes its design ethos from the older iPhone XR, with an aluminium frame and a coloured glass rear.

There's a dual camera on the rear - the main differentiator between this model and the iPhone 11 Pro models below - and a few extra camera features have been introduced compared to the older iPhone XR, including Night Mode and Auto Adjustments.

The iPhone 11 runs on the A13 chip, like the iPhone 11 Pro models, and it is claimed to offer a battery boost of one hour more than the iPhone XR. It offers the same size and resolution display as the iPhone XR however, meaning it sticks with LCD over OLED - and it lacks HDR too. It does have True Tone though, as well as Haptic Touch like the Pro models.

The iPhone 11 is the iPhone to buy if you want most of the latest and greatest features offered by Apple, but you don't want to pay too much for the privilege.

Dimensions: 144 x 71.4 x 8.1mm, 188g, IP68 water resistant

144 x 71.4 x 8.1mm, 188g, IP68 water resistant Display: 5.8-inch, 2436 x 1125 (458ppi), Haptic Touch, True Tone, HDR

5.8-inch, 2436 x 1125 (458ppi), Haptic Touch, True Tone, HDR Storage: 64GB, 256GB, 512GB

64GB, 256GB, 512GB Battery: Up to 18 hours

Up to 18 hours Colours: Silver, Space Grey, Gold, Midnight Green

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The Apple iPhone 11 Pro is the iPhone with all the latest and greatest technology from Apple. It's the direct replacement for the 2018 iPhone XS and it features a stainless steel frame, matte glass rear and a very premium finish with a 19:9 aspect ratio all-screen design.

An OLED screen dominates the front, rather than the LCD display of the 11, and you'll find Haptic Touch in place of 3D Touch, along with mobile HDR compatibility. True Tone technology is also present and Face ID sits at the top of the display within the notch replacing the Touch ID fingerprint sensor.

Like the iPhone 11, the 11 Pro has the A13 Bionic processor with neural engine, no headphone jack and it supports wireless charging and fast charging - with an 18W fast charger in the box - something the iPhone 11 doesn't offer. It also has a waterproof rating of IP68.

A triple-rear camera is present on the iPhone 11 Pro, featuring a wide-angle, ultra-wide-angle and telephoto lens and the iPhone 11 Pro has the same features as the iPhone 11 in terms of camera, as well as a few extras thanks to the third lens. An upgraded 12-megapixel TrueDepth front camera is also present.

The iPhone 11 Pro is the iPhone to buy if you want everything Apple has to offer in a slightly smaller and cheaper package than the iPhone 11 Pro Max.

Dimensions: 158 x 77.8 x 8.1mm, 226g, IP68 water resistance

158 x 77.8 x 8.1mm, 226g, IP68 water resistance Display: 6.5-inch, 2688 x 1242 (458ppi), Haptic Touch, True Tone, HDR

6.5-inch, 2688 x 1242 (458ppi), Haptic Touch, True Tone, HDR Storage: 64GB, 256GB, 512GB

64GB, 256GB, 512GB Battery: Up to 25 hours

Up to 25 hours Colours: Silver, Space Grey, Gold, Midnight Green

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The iPhone 11 Pro Max offers everything the smaller iPhone 11 Pro does but in a larger package. It is the iPhone with the largest display, offering a 6.5-inch OLED screen on its front.

Aside from physical size and display size however, the iPhone 11 Pro Max has everything the iPhone 11 Pro does. This means you'll get the A13 chip, a triple 12-megapixel camera on the rear, a stainless steel body, textured glass back, wireless charging, all the display technology including HDR and Haptic Touch and it also has the IP68 water resistance.

The iPhone 11 Pro Max is the iPhone to buy if budget isn't an issue and you're after everything Apple offers in the largest possible format.

Dimensions: 150.9 x 75.7 x 8.3mm, 194g, IP67 water resistant

150.9 x 75.7 x 8.3mm, 194g, IP67 water resistant Display: 6.1-inch, 1792 x 828 (326ppi), True Tone

6.1-inch, 1792 x 828 (326ppi), True Tone Storage: 64GB, 128GB, 256GB

64GB, 128GB, 256GB Battery: Up to 25 hours

Up to 25 hours Colours: White, Black, Blue, Yellow, Coral, (PRODUCT)RED

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The iPhone XR is the cheapest way to get your hands on the latest iPhone design with the full-screen front, no Touch ID home button and Face ID, sitting between the iPhone SE and the iPhone 11 models in terms of price. The XR has a glass back with IP67 water and dust resistance and it comes in six colour options.

The display size increases from the iPhone SE to 6.1-inches but the footprint of the XR sits makes it slightly larger than the iPhone SE. It's an LCD display that offers Haptic Touch. It also has True Tone technology.

The iPhone XR runs on Apple's A12 Bionic chip and its battery life is good, longer than the iPhone SE. It supports wireless charging and fast charging, but it doesn't have a fast charger in the box.

A single-camera is present on the back of the iPhone XR, differentiating it from the more expensive iPhone 11 model. It's a 12-megapixel wide-angle sensor with OIS, but despite not offering the secondary telephoto sensor, the iPhone XR still has Portrait Mode with Depth Control, Smart HDR and Portrait Lighting features like the iPhone 11 models. There is also a 7-megapixel TrueDepth camera on the front which allows for Face ID and Animojis.

The iPhone XR is the iPhone to buy if you want a Face ID iPhone but aren't that fussed about the dual camera of the iPhone 11.

Dimensions: 138.4 x 67.3 x 7.3mm, 148g, IP67 water resistant

138.4 x 67.3 x 7.3mm, 148g, IP67 water resistant Display: 4.7-inch, 1334 x 750 (326ppi), Haptic Touch, True Tone

4.7-inch, 1334 x 750 (326ppi), Haptic Touch, True Tone Storage: 64GB, 128GB, 256GB

64GB, 128GB, 256GB Battery: Up to 13 hours

Up to 13 hours Colours: Black, White, Product Red

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The iPhone SE (2020) is Apple's newest most affordable phone, creating a new entry point into the ecosystem. It picks up the iPhone 8 design, retaining the exact same measurements, while also offering IP67 protection.

That design means that the iPhone SE retains Touch ID, the only model that doesn't have Face ID, and the display also sticks to the old 16:9 aspect, rather than the 19:9 aspect of the iPhone XR and 11 models.

Outside of that design, the iPhone SE is much newer. It's powered by the A13 Bionic, the same chap that's in the iPhone 11 models, meaning that it's more powerful than the iPhone XR.

There's a single 12-megapixel camera on the back offering the same functions as the iPhone XR, but going a step further to offer the same Portrait Lighting effects as the iPhone 11 models, as well as next-gen Smart HDR. That means that it's a better offering on the rear camera than the iPhone XR.

Writing by Britta O'Boyle.