https://community.o2.co.uk/t5/Android/SIM-network-unlock-PIN/m-p/1220910#M72122 <P><a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/3486387">@Timms2002</a>&nbsp;You need to have the phone unlocked before you can put a non o2 sim in.&nbsp;<A href="https://www.o2.co.uk/help/phones-sims-and-devices/unlocking-an-o2-mobile-to-use-on-a-different-network" target="_blank">https://www.o2.co.uk/help/phones-sims-and-devices/unlocking-an-o2-mobile-to-use-on-a-different-network</A></P> Thu, 09 May 2019 14:25:14 GMT Anonymous 2019-05-09T14:25:14Z https://community.o2.co.uk/t5/Android/SIM-network-unlock-PIN/m-p/1220908#M72120 entered a vodaphone sim into an old O2 carried Sony Xperia X and it’s asking for a SIM network unlock PIN? anyone know what to do? Thu, 09 May 2019 14:14:03 GMT https://community.o2.co.uk/t5/Android/SIM-network-unlock-PIN/m-p/1220908#M72120 Timms2002 2019-05-09T14:14:03Z https://community.o2.co.uk/t5/Android/SIM-network-unlock-PIN/m-p/1220909#M72121 <P>Follow the advice here</P><P><LI-PRODUCT title="Guide: Unlocking an O2 phone to use a different SIM card" id="Guide003"></LI-PRODUCT>&nbsp;</P> Thu, 09 May 2019 14:24:44 GMT https://community.o2.co.uk/t5/Android/SIM-network-unlock-PIN/m-p/1220909#M72121 jonsie 2019-05-09T14:24:44Z https://community.o2.co.uk/t5/Android/SIM-network-unlock-PIN/m-p/1220910#M72122 <P><a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/3486387">@Timms2002</a>&nbsp;You need to have the phone unlocked before you can put a non o2 sim in.&nbsp;<A href="https://www.o2.co.uk/help/phones-sims-and-devices/unlocking-an-o2-mobile-to-use-on-a-different-network" target="_blank">https://www.o2.co.uk/help/phones-sims-and-devices/unlocking-an-o2-mobile-to-use-on-a-different-network</A></P> Thu, 09 May 2019 14:25:14 GMT https://community.o2.co.uk/t5/Android/SIM-network-unlock-PIN/m-p/1220910#M72122 Anonymous 2019-05-09T14:25:14Z https://community.o2.co.uk/t5/Android/SIM-network-unlock-PIN/m-p/1222019#M72123 <P>Good morning&nbsp;<a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/3486387">@Timms2002</a>, and welcome to the forum&nbsp;<img id="wave_smiley54" class="emoticon emoticon-wave_smiley54" src="https://community.o2.co.uk/html/@71A872F0A586848F4356635408776E97/images/smilies/wave_smiley54.gif" alt="Wave" title="Wave" /></P> <P>&nbsp;</P> <P>The info above should help you get this sorted, but if you have any questions on the process or need some more help, please give us a shout <img class="lia-deferred-image lia-image-emoji" src="https://community.o2.co.uk/html/@86490D440D0190FE6D301D335D2A66D8/images/smilies/011.png" alt="slight_smile" title="slight_smile" /></P> Mon, 13 May 2019 09:50:01 GMT https://community.o2.co.uk/t5/Android/SIM-network-unlock-PIN/m-p/1222019#M72123 EmilieT 2019-05-13T09:50:01Z