F L O P P Y - S E N D


O2 logo

The O2 Carrier From United Kingdom is denoted by codes: 234 02, 234 10, 234 11. The followings IDs are called HNI (Home network identity). This code is created by the combination of two other Mobile Country Code (MCC) and Mobile Network Code (MNC). The first three numbers stand for the MCC and they are used in order to identify the region which the carried comes from (in the following example it’s United Kingdom). The last numbers of the HNI code are equal with the MNC and this ID is given for the specific mobile network operator.

Besides O2 United Kingdom has assigned country code + 44. This number + 44 is equal with international calling code and it’s simply the telephone dialing prefixes used for calling O2 numbers.
O2 uses 2 GSM bands, 2 UMTS bands, 4 and 0 CDMA bands.. You can read the specific frequency bands in the table below. All bands of the O2 are display in MHz units.
Another important information in O2 United Kingdom architectures is the standard of used protocols. It also uses 7 protocols such as GSM, UMTS, LTE, CDMA. The ISO standard code of O2 is GB. You can see more info about this mobile network operator at http://www.o2.co.uk/. How to check O2 coverage? How to check if your phone will work in United Kingdom?

FloppySend About
Name O2
Company Telefonica Europe
Country United Kingdom flag United Kingdom
Country ISO GB
Country code + 44
Carrier website http://www.o2.co.uk/
Carrier codes
  • 234 02
  • 234 10
  • 234 11
Mobile prefix 71, 72, 74, 75, 76, 77, 78, 79
Size of NSN 10
Number format

+44 71x xxx xxxx

+44 72x xxx xxxx

+44 74x xxx xxxx

+44 75x xxx xxxx

+44 76x xxx xxxx

+44 77x xxx xxxx

+44 78x xxx xxxx

+44 79x xxx xxxx

Coverage map Check O2 Coverage
Subscribers 25 400 000 (July 2020)
GSM bands
  • 900 (E-GSM)
  • 1800 (DCS)
GSM protocols
  • EDGE
  • GPRS
UMTS bands
  • B1 (2100)
  • B8 (900 GSM)
UMTS protocols
  • HSPA+
  • UTMS
LTE bands
  • B1 (2100)
  • B3 (1800+)
  • B20 (800 DD)
  • B40 (TD 2300)
LTE protocols
  • LTE
  • LTE-A
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