https://community.o2.co.uk/t5/Android/Upgraded-phone/m-p/894377#M49425 You need to activate the new sim card <A href="http://swapmysim.o2.co.uk/" target="_blank">http://swapmysim.o2.co.uk/</A> Wed, 08 Jul 2015 15:05:13 GMT MI5 2015-07-08T15:05:13Z https://community.o2.co.uk/t5/Android/Upgraded-phone/m-p/894376#M49424 So I recently got an upgrade for my S4 to an s6 while I was on a pay monthly contract, I take the phone out and insert the sim it came with but all I get is nit registered on network so I go to my settings,click onto networks and it loads up O2-UK. Clicked on that an all I get is that I cannot connect to that either. I also cannot use mobile data.<BR /><BR />Was there any point in this new sim or should I swap my old one in? Wed, 08 Jul 2015 14:56:23 GMT https://community.o2.co.uk/t5/Android/Upgraded-phone/m-p/894376#M49424 Anonymous 2015-07-08T14:56:23Z https://community.o2.co.uk/t5/Android/Upgraded-phone/m-p/894377#M49425 You need to activate the new sim card <A href="http://swapmysim.o2.co.uk/" target="_blank">http://swapmysim.o2.co.uk/</A> Wed, 08 Jul 2015 15:05:13 GMT https://community.o2.co.uk/t5/Android/Upgraded-phone/m-p/894377#M49425 MI5 2015-07-08T15:05:13Z