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Micro SIM only deals

Compare SIM only plans at uSwitch

  • Keep your phone and get a cheap SIM card only contract
  • Unlimited data SIM card only deals from just £20.00 per month
  • 4G SIM deals available on one month contracts
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Which SIM size do I need?

  • All networks

Deal allowance

Most contracts now offer unlimited texts and minutes. How much data you need depends on how you use your handset.

1GB per month: email, occasional web browsing and watching the odd YouTube video.

2GB per month: heavier web use, email regularly and occasional music and video streaming. For the average smartphone user, 2GB of usage should be just right.

3GB: Cloud-based photo services, streaming video, downloading music and regular email and social networks.

5GB or more: Regularly stream video and music, upload images to social networking sites and multi-player online games. Higher allowances let you make the most of your phone.

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Featured deals
Monthly cost

Contract length

One-month SIM only contracts give you the freedom to switch provider with just 30 days' notice if a better deal appears, while still providing more generous usage allowances than pay as you go deals. One month-sim only deals usually work on a rolling contract basis.

12-month SIM only contracts provide more generous usage allowances than one-month SIM only deals. However, because you're committing to a longer term deal, you haven't got the same freedom to switch if a better deal becomes available.

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Which SIM size do I need?

Only show 4G deals

4G deals

If you use the internet beyond occasional email and web surfing, you'll want 4G. It's faster than 3G, provides smoother online video and music streaming and lets you do more of whatever it is you like doing.

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Micro SIM Giffgaff
giffgaff
No
contract - 4G

giffgaff
Micro SIM
No credit check

giffgaff
No
contract - 4G

500 minutes Unlimited texts 2GB data

£12.00
per month
No credit check
£12.00
per month
giffgaff See deal
Multi SIM Id mobile
iD Mobile
1 month
contract - 4G

iD Mobile
Multi SIM
Flexible cap on spending 1 month contract

iD Mobile
1 month
contract - 4G

500 minutes 5000 texts 4GB data

£10.00
per month
1 month contract
Flexible cap on spending
£10.00
per month
iD Mobile See deal
Multi SIM Bt mobile
BT Mobile
12 month
contract - 4G

BT Mobile
Multi SIM
£80 iTunes or Amazon Gift Card

BT Mobile
12 month
contract - 4G

Unlimited minutes Unlimited texts 15GB data

£25.00
per month
£80 iTunes or Amazon Gift Card
£25.00
per month
BT Mobile See deal
Micro SIM Virgin
Virgin Media
1 month

Virgin Media
Micro SIM
uSwitch Exclusive Free £35 Retail Voucher

Virgin Media
1 month
contract

5000 minutes Unlimited texts 5GB data

£15.00
per month
uSwitch Exclusive Free £35 Retail Voucher
£15.00
per month
Virgin Mobile See deal
Multi SIM Talk mobile
Talkmobile
12 month

Talkmobile
Multi SIM
Tethering included uSwitch Exclusive Free vouchers worth £30

Talkmobile
12 month
contract

3000 minutes 5000 texts 4GB data

£10.00
per month
uSwitch Exclusive Free vouchers worth £30
Tethering included
£10.00
per month
Talkmobile See deal
Multi SIM Id mobile
iD Mobile
1 month
contract - 4G

iD Mobile
Multi SIM
uSwitch exclusive

iD Mobile
1 month
contract - 4G

500 minutes 5000 texts 6GB data

£12.50
per month
uSwitch exclusive
£12.50
per month
iD Mobile See deal
Combi SIM O2
O2
12 month
contract - 4G

O2
Combi SIM

O2
12 month
contract - 4G

Unlimited minutes Unlimited texts 10GB data

£18.00
per month
£18.00
per month
O2 Direct See deal
Micro SIM Three
Three Mobile
12 month
contract - 4G

Three Mobile
Micro SIM
Use abroad at no extra cost 6 months half price

Three Mobile
12 month
contract - 4G

200 minutes Unlimited texts Unlimited data

£23.00
per month
6 months half price
Use abroad at no extra cost
£23.00
per month
3 Direct See deal
Micro SIM Giffgaff
giffgaff
No
contract - 4G

giffgaff
Micro SIM
No credit check Unlimited tariff Data speed reduced after 6GB usage

giffgaff
No
contract - 4G

Unlimited minutes Unlimited texts Unlimited data

£20.00
per month
Unlimited tariff Data speed reduced after 6GB usage
No credit check
£20.00
per month
giffgaff See deal
Micro SIM Life mobile
LIFE Mobile
1 month

LIFE Mobile
Micro SIM
Smart cap and tethering 1 month contract

LIFE Mobile
1 month
contract

1000 minutes 5000 texts 1GB data

£7.45
per month
1 month contract
Smart cap and tethering
£7.45
per month
LIFE Mobile See deal
 
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The term ‘micro SIM only deals’ refers to mobile plans or tariffs that do away with a subsidised handset and simply include a micro SIM card and per monthly usage allowance that you can use with a mobile phone you already own or are looking to purchase separately.

They are ideal for people who just want the calls, minutes and data allowances of a mobile phone deal, which is a great way to save money. Better still, because they often run on rolling contract basis and can be cancelled with just one month’s notice, they also offer consumers amazing levels of freedom and flexibility.

Whether you’re looking to cut your monthly outlay, are happy with an older phone or have bought a brand new phone contract-free and need a SIM card and per monthly allowance, micro SIM only deals are just the ticket.

What is a Micro SIM card?

A Micro SIM card is a plastic module with an integrated circuit that stores network-specific information used to authenticate and identify you as a subscriber on a mobile network.

It is about half the size of a standard SIM card (also known as the mini SIM card) and is used by most modern smartphones and tablets launched since 2010.

It’s also backwards compatible, so you can still use it on older devices using a mini SIM adapter.

To start using a micro SIM card, all you have to do is insert it into the micro SIM card slot, usually located behind the battery (if it’s removable) or on the side of the device, which may involve a removable SIM tray (on the iPhone, for example).

Why choose a Micro SIM only mobile phone deal?

By choosing a micro SIM card only deal, you are not paying nearly as much as you would be if it also included a handset. You might like to buy the latest handset separately to avoid signing up to a long-term contract. Or you might already own a handset – whether it’s your primary device or a secondary/inexpensive model to take with you on your adventures.

Keeping personal and work numbers separate is a great reason to pick up a micro SIM only deal, and they are a fantastic way to save money on roaming with many handsets offering Dual SIM support, enabling you to easily switch between your home and international SIMs.

Which networks offer Micro SIM only deals?

All the major UK networks offer micro SIM only deals in a range of 12-month contracts. These are:

Micro SIM only pay as you go deals

If you want to go one step further in saving money on your new or existing handset, you can also pick up micro SIM only deals on a pay as you go tariff that lets you top-up only as much you want or need.

Maybe your contract has run out and you don’t plan to take out a new one. Or perhaps you have already penned a new contract, but don’t want your old handset to fall out of use. With a micro SIM card deal on pay as you go, you can keep your ageing handsets around longer, or even pass them on to another member of the family.

This is why micro SIM pay as you deals are hugely popular with the young demographic. They don’t require signing any contract and allow you to keep an eye on your spending.

Micro SIM card only handsets

Micro SIM cards are compatible with almost any modern smartphone. To name just a few examples, these include Apple’s iPhone 4 and iPhone 4S, Galaxy handsets, HTC One range and the latest additions to Nokia’s Lumia family of smartphones.

You can find out if a particular handset has micro SIM card support or not by visiting its dedicated page at uSwitch.

Don’t forget you can also make micro SIM cards work with older handsets using a mini SIM adapter, which are widely available through mobile accessories vendors.

Looking for an even smaller SIM for your latest smartphone? Check out our best and cheapest Nano SIM only deals

Latest articles

Which SIM do I need?
  • uSwitch SIM

    Standard SIM Card

    This SIM fits hundreds of different devices. Older handset models usually need this size of SIM card, and it is commonly compatible with non-smartphones.

  • uSwitch SIM uSwitch SIM

    Micro SIM

    This SIM fits most of the modern smartphones. It is smaller than the standard SIM, consuming less space.

    Which phones can I use this in?

    • Apple
      iPhone 4/4S and Apple iPad
    • HTC
      One series (excluding the M8)
    • Samsung
      Galaxy S3, S4 & S5 and Galaxy Note 2, 3 and 4
    • Sony
      Xperia S & Z and Z2 series
  • uSwitch SIM uSwitch SIM

    Nano SIM

    This SIM fits the most recent smartphones. It is smaller than the standard and micro SIM.

    Which phones can I use this in?

    • Apple
      iPhone 5/5s/5c and iPhone 6 series
    • Samsung
      Galaxy Alpha
    • Sony
      Xperia Z3 and Z3 Compact
    • HTC
      One M8, Desire 610 and Desire 816
    • Nokia
      Lumia 1520, Lumia 1320, Lumia 930
    • Motorola
      Moto X