How to Enable 3G on O2

Written by richard jennings
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How to Enable 3G on O2
You can enable 3G on your O2 mobile phone. (suspicious cell phone man image by Brett Mulcahy from

Third generation, or IMT-2000, is a set of standards outlining the operation of new mobile phones. Three-G typically offers increased rates of transmission, when compared to its predecessors, 2G, 2.5G and 2.75G. The implementation of 3G standards called for an increase in performance that slightly older handsets were still capable of, and some 3G-ready handsets, such as the iPhone, were released before the 3G service could be rolled out on its carriers, requiring an activation procedure to unlock their full potential. Typically, older handsets require that you obtain a 3G SIM card before accessing 3G service.

Skill level:
Moderately Easy


  1. 1

    Remove the battery cover to expose the SIM card.

  2. 2

    Remove the SIM card.

  3. 3

    Examine the SIM card. If it is capable of 3G, it should have a serial number formated like this: "****3G****" If not, your SIM card is not capable of 3G.

  4. 4

    Dial 202 from your O2 cell phone.

  5. 5

    Request a new, 3G SIM card. They should provide one free of charge.

Tips and warnings

  • Be sure to write down the name of the employee you speak with for your own records.

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