SIM markings and APN settings

When you receive a SIM there are 2 codes written on it, even in it's "nano" format, so that the SIM can be identified.

Your SIM will usually arrive in "Trio" format (full size, with ability to snap out to Micro or Nano size, as required:

Mini ("Trio") SIM [2FF]	Micro size SIM [3FF]	Nano size SIM [4FF]

Also available is "VQFN8" [MFF2], an 8 legged solderable eSIM, to fit socket as per below:

Here's how to identify the SIM via the numerical code ("ICC ID" - Integrated Circuit Card Identifier):

"O2" logo	"3" logo	"EE" logo	"Voda" logo
Network ID: 23410	Network ID: 23420	Network ID: 23430	Network ID: 23415
Join 00682 & 0461 & 1234: 0068204611234 Insert 894411....full ICC ID is: 8944110068204611234	Join 19284 & 003 & 123: 19284003123 Insert 89442001....ICC ID is: 8944200119284003123	Join 841278 & 138134: 841278138134 Insert 894430....full ICC ID is: 894430841278138134	Join 00030 & 41339 & 71234: 000304133971234 Insert 89441....so full ICC ID is: 89441000304133971234
Manual APN (can use auto) APN: mobile.o2.co.uk Username: o2web Password: password Authenticaiton: PAP IP: IPv4 & IPv6	Manual APN (can use auto) APN: 3internet (or three.co.uk for NAT) Username: user Password: password Authenticaiton: PAP	Manual APN only APN: everywhere Username: eesecure Password: secure Authenticaiton: PAP IPv6: IPv4 only	Manual APN (can use auto) APN: internet Username: web Password: web Authenticaiton: PAP

The partial ICC ID is numerical only (non alphabetical), spread over multiple lines of text; the other codes containing alpha-numerics ("4GPP3" for O2, or "GA6J129" for 3) can be ignored. A full ICC ID is 19 digits long, or 20 for Vodafone MBB. 

Our control panels allow you to search for ICC ID (or partial ICC ID), so as to audit and identify the SIM; the MSISDN number (aka. the 07xx phone number) can be matched once we know the ICC ID.

How the ICC ID is constructed

MMCC IINN NNNN NNNN NN C x

MM – most SIM Cards have the same first two digits – 89.

CC  – county code, or MCC (Mobile County Code), used to identify a mobile subscriber’s county of origin.

II – SIM card issuer identifier, or MNC (Mobile Network Code), is used to identify a specific mobile network provider. This code is vital for roaming in different countries.

NN – letters N stands for SIM number or account ID. These numbers are what make the SIM card unique.

C – the sum of previous digits using the Luhn algorithm.

x  – extra digit that ICCID officially does not include as a part of the number.