Which SIM?

Standard, Micro, Nano?

If you're looking to buy a SIM only plan, the first thing you need to know is which SIM card you’ll need. Different devices, including mobile phone, tablets and USB modems have different sized SIM slots, so making sure you get the right one is top of the list.

There are currently three main shapes of SIM cards. There only difference is size :

  • Standard SIM
  • Nano SIM
  • Micro SIM

Below we’ve listed which SIMs will work with which handsets, to give you an idea of what to look for. If your handset isn’t on the list, you can check the measurements of your SIM port on the handset.

TIP: If you're not sure which SIM card your new handset will require you can find this information within the 'Specs' tab on our product pages

Standard, Micro or Nano

Standard SIM

Used in:

  • All USB modems
  • All Pocket WiFi modems
  • Apple iPhone 3GS
  • Samsung Galaxy Note
  • Samsung Galaxy SII

and many many more...

Micro SIM

Used in:

  • Apple iPhone 4 & 4S
  • Apple iPad with Retina Display
  • Samsung Galaxy SIII, S4, Galaxy Note II, Note 3
  • HTC One, One X, One SV, 8X
  • Nokia N9, Lumia 720/820/920/1020
  • Sony Xperia Z, Z1

and many many more...

Nano SIM

Used in:

  • Apple iPhone 5, 5c, 5s
  • Apple iPad Mini
  • Apple iPad Air

What is a Combi SIM?

A Combi SIM is a Standard SIM card which lets you pop out a smaller Mirco SIM if needed, therefore can be used in any device that accepts standard or micro SIMs.

New Mobile Phone Purchases

When you purchase a mobile phone from Phones 4u, we will always ensure that you will also receive the appropriate SIM to fit your new device.

New Connections

When purchasing a new mobile phone from Phones 4u, on either a contract or PAYG plan, you will receive a SIM card which will hold your new number. We’ll also make sure you get the right sized SIM for your new handset.

If you would like to port a number over from your existing network, see our FAQ on number porting.


When upgrading your current handset with Phones 4u, you will receive a new SIM as part of your order. This new SIM will already be set up to your existing mobile phone number, so slot it into your new handset and you’re ready to go.

Replacement SIM's

There are instances in which you’ll need a replacement SIM card, like if your phone is lost or stolen. In these instances the first thing you should do is contact your network provider and explain why you require a new SIM.

New SIM cards can usually be provided by your network free of charge; however this may vary from network to network. If you’re at a loose end, we recommend heading to your network’s local store where replacement SIMs will be available on the same day.