3 Sim Cards Options and Plans Compared

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Let's take a closer look at three sim card options and plans. The Three sim card plan offers 12GB of data for £10 per month, making it a great value for those who use their phone for browsing and social media.

You can also consider the Smarty sim card, which offers 10GB of data for £10 per month. This plan is ideal for those who want a simple, no-frills sim card experience.

The other option is the Smarty sim card's " Max" plan, which offers 20GB of data for £15 per month. This plan is perfect for those who need more data for streaming, gaming, or working on the go.

Expand your knowledge: Sim Cards with Unlimited Data

Choosing a Plan

Choosing a Three SIM card plan can be overwhelming, but let's break it down. You should primarily consider how much data you need, as that's the main differentiator.

Three SIM Only deals are some of the cheapest available, typically undercutting the other big-name networks. They come with a host of extras you won't get on all other networks, such as Three+ Rewards.

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To help you choose, here are some key things to consider:

  • How much data do you need? Check out our full 'how much data do I need?' guide for an explanation of how far various allowances go for different activities.
  • What's your budget? If you're happy to commit for one or two years, the monthly costs will typically be lower, but you lose the flexibility of a 30-day plan.
  • Do you want unlimited data? If so, be prepared for the higher price tag.

Here are some exclusive Three SIM deals to consider:

Choosing a Plan

You should primarily consider how much data you need when picking a Three SIM Only deal, as that's the main differentiator. The amount of data you need depends on your activities, such as browsing, streaming, or gaming.

Three SIM Only deals are some of the cheapest available, typically undercutting other big-name networks. They come with a host of extras you won't get on all other networks.

To determine how much data you need, check out the 'how much data do I need?' guide. This will give you an idea of how far various allowances go for different activities.

You can choose from a variety of plans, including 12GB, 80GB, and unlimited data. Each plan also comes with unlimited minutes and texts.

Here are some of the best Three SIM deals available:

If you're a tourist, you can also consider the Auto-renew plans, which start at £10 GBP (around $12.6 USD) for 12GB of data and unlimited minutes and texts.

Porting Phone Number

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You can quickly and easily bring over your existing number to your new plan by following the process outlined by your provider.

You can check out the full guide to keeping your number to find out how.

Some providers make it easy to port your number, while others may have more complex requirements.

You can quickly and easily bring over your existing number to Three SIM Only, according to their guide.

Card Options

You can get a triple-SIM card from your mobile service provider, which is a full-size SIM card that can be punched out to create smaller SIM cards.

This triple-SIM card is a great option because it gives you a mini-SIM, micro-SIM, and nano-SIM all in one, making it easy to find the right size for your device.

The good news is that most carriers now issue universal 3-in-1 SIM cards that can be easily punched out to fit into any device.

Here are the common SIM card sizes:

  • Mini-SIM (aka 2FF)
  • Micro-SIM (aka 3FF)
  • Nano-SIM (aka 4FF)

These SIM cards are electrically compatible, so you can usually alter the size to fit your device. However, it's worth noting that some older SIM cards might not support newer carrier features.

Card Types Video

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There's more to SIM cards than you might think, and it's worth taking a closer look at the different types available.

Cloud SIMs and Virtual SIMs are two of the newer types of SIM cards that are gaining popularity.

These types of SIM cards allow for remote management and can be used in a variety of devices, including IoT devices and smartphones.

They're particularly useful for businesses that need to manage large numbers of SIMs across different locations.

iSIMs, on the other hand, are a type of SIM card that's even smaller than a traditional SIM card.

They're designed for use in specific devices, such as smartwatches and other wearables.

Card Sizes

SIM cards have been getting smaller over the years, from the original full-size SIM that was the size of a credit card in the early 1990s.

The most common SIM card sizes you'll see today are mini-SIM (aka 2FF), micro-SIM (aka 3FF), and nano-SIM (aka 4FF). These sizes are often referred to as standard, regular, or mini sizes.

Expand your knowledge: Micro Mini Sim

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Fortunately, even though SIM cards have been shrinking, they are electrically compatible, making it usually possible to alter the size of a SIM card to deal with size mismatch issues.

Most carriers now issue universal 3-in-1 SIM cards that can easily be punched out to fit into any device.

Here are the most common SIM card sizes:

UK Support and Availability

Three offers eSIM support in the UK, which is a virtual SIM built into mobile devices like smartphones and tablets. This eliminates the need to visit a physical store or wait for delivery.

You can buy a UK eSIM plan directly from Three's website, but you'll need to have your passport or driver's license for ID verification. Alternatively, you can purchase a plan from third-party eSIM sellers online without ID check.

Three eSIM plans offer several benefits, including the ability to use two different numbers on a cell phone due to the dual-SIM feature, and eSIM is also eco-friendly with no plastic.

Related reading: Do Ipads Need Sim Cards

Buy in the UK

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If you're in the UK, you can buy a Three SIM card in several ways. You can purchase one online through Three's official website, use the Three app, or visit a Three shop in person.

To make the process smoother, bring your driver's license or passport, and either New Zealand dollars in cash or a credit card. This will help with the SIM purchase and registration.

If you want to get the best deals, head to the city stores. You can also buy Three SIM cards at UK airports, but only if your destination allows it, and you'll get instant internet.

In addition to Three, you can also get SIM cards from other operators like EE, O2, and Vodafone. EE has reasonably priced plans with suitable data and SMS/call bundles, while O2 plans are affordable and include free EU roaming on some plans.

Vodafone plans offer generous data, calls, and texts, and provide good value for money. If you're new to eSIMs, consider getting one from a reputable provider like Gigago, which offers a wide selection of UK eSIM plans for tourists.

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Gigago's cheapest pack costs only $2.0 and provides 1GB of data over 3 days, with other plans varying between $2.0 and $99.5 depending on your trip duration and data needs. Before downloading a UK eSIM plan, make sure your smartphone is compatible with eSIM.

If you prefer a Pay As You Go SIM card, Three offers free ones with charges starting at 35p per minute, 15p per text, or 10p per megabyte of data. Alternatively, you can turn your credit into an add-on, giving you a bundle of minutes, texts, and data, right up to unlimited data, minutes, and texts for £35, valid for 30 days.

UK Support?

If you're thinking of getting a UK eSIM, you're in luck - Three offers eSIM support in the UK. Three's eSIM is built into mobile devices like smartphones, tablets, or watches, so you don't need a physical SIM.

You can buy a UK eSIM plan directly from Three's website, but you'll need to have your passport or driver's license handy for ID verification. Alternatively, you can buy from third-party eSIM sellers online without an ID check.

Close-up of a Barista Putting a Card to a Payment Terminal
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Three's eSIM offers some great benefits, including no need to visit a physical store or wait for delivery, easy online activation, and the ability to use two different numbers on your cell phone due to the dual-SIM feature. Plus, eSIMs are eco-friendly with no plastic.

Here are your two options for buying a UK eSIM plan:

  • Purchase a UK eSIM plan directly from Three’s website.
  • Buy a UK eSIM plan from third-party eSIM sellers.

Native and Artificial Support

Native triple SIM support is a built-in technology that allows you to insert 3 SIM cards without swapping them. This technology is due to manufacturing costs, as putting more than one network transmitter can be expensive.

In native triple SIM support, you have 3 receivers but only 1 transmitter, which means you're not draining the battery unnecessarily. This allows all 3 SIM cards to receive texts and calls at the same time, and you can choose which one to use for Internet data.

However, with native triple SIM support, when you accept a call on one SIM card, the other two are temporarily disabled until you end it.

Native Support

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Native Support is a game-changer for many users.

This type of support allows you to insert 3 SIM cards into your device, eliminating the need to constantly swap them out.

You can use 3 SIM cards simultaneously, receiving texts and calls on all three, and choose which one to use for Internet data.

This is made possible by the TSTS (Triple SIM Triple Standby) technology, which is used in almost all native triple-SIM devices.

Manufacturing costs play a role in the limited availability of this technology, as adding multiple network transmitters can be expensive.

By having 3 receivers but only 1 transmitter, you're not wasting battery life unnecessarily.

This means you can keep all 3 SIM cards active at the same time, without draining your battery.

A different take: Sim Cards Verizon

Artificial Support

Artificial triple-SIM support is a solution to the problem of limited SIM card slots in smartphones. This solution allows you to expand a slot intended for 2 SIM cards into accepting a third by using a third-party adapter.

Smartphone with dual SIM tray and box
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A reputable company like SIMORE offers such adapters, which are relatively cheap and easy to install. They look like thin plastic strips with golden contact and an additional SIM card slot.

The third SIM is recognized as if you had triple SIM support from the get-go, which is a big advantage. This means you don't have to buy a new phone or settle for an outdated, off-brand phone manufacturer.

Triple-SIM adapters support all newest flagship smartphone models, such as the Apple iPhone 12, Samsung Galaxy S20+, and Huawei P40. They also support flagships of older generations.

Achieving Mobile Internet Redundancy with a Peplink Router is a game-changer for remote workers and travelers.

The YouTube Channel "Video News, Tips & Guides" offers a tutorial on how to set up a Peplink router for mobile internet redundancy.

By following the video, you can learn how to create a reliable internet connection that stays online even if one internet source fails.

The Facebook Page "News Feed & Announcements" provides updates on the latest Peplink router models and firmware updates that enhance mobile internet redundancy.

With a Peplink router, you can combine multiple internet sources, such as cellular and Wi-Fi, to create a single, redundant internet connection.

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Benefits and Features

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Having multiple sim cards can be incredibly beneficial for your phone and your wallet.

Each of the three sim cards can be used for different purposes, such as having a separate work number and a personal number.

With multiple sim cards, you can also take advantage of cheaper international rates and data plans.

The first sim card can be used for your primary phone number, while the second sim card can be used for a secondary number or a data-only plan.

This setup allows you to keep your personal and work life separate, and also saves you money on phone bills.

The third sim card can be used for a portable Wi-Fi hotspot, providing internet access on the go.

With the ability to switch between sim cards, you can easily switch between different phone numbers and plans.

For another approach, see: Do Sim Cards Work in Any Phone

Free Inquiry

You can get a free Three SIM card, which you can order and activate with ease.

If you're looking to get started with a new SIM, you can indeed order a free one, and it's a great way to begin your Three experience.

To activate your free SIM, simply top-up with credit and you're good to go.

On a similar theme: Activate Verizon Sim Online

Frequently Asked Questions

What SIM cards use 3 network?

SIM cards from SMARTY, iD Mobile, Superdrug Mobile, and Honest Mobile use Three's network. These MVNOs leverage Three's core network infrastructure for their services.

How to set up a 3 SIM card?

To activate a new SIM card, charge your phone, insert the SIM, and turn it on. You'll receive texts guiding you through the activation process, including a final restart.

Gilbert Deckow

Senior Writer

Gilbert Deckow is a seasoned writer with a knack for breaking down complex technical topics into engaging and accessible content. With a focus on the ever-evolving world of cloud computing, Gilbert has established himself as a go-to expert on Azure Storage Options and related topics. Gilbert's writing style is characterized by clarity, precision, and a dash of humor, making even the most intricate concepts feel approachable and enjoyable to read.

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