https://community.o2.co.uk/t5/Android/messaging-centre-number/m-p/587760#M27364 <P>why does the o2 messaging number keep changing......there are 2 numbers depending what tarriff ..........</P> Tue, 17 Dec 2013 13:28:02 GMT Anonymous 2013-12-17T13:28:02Z https://community.o2.co.uk/t5/Android/messaging-centre-number/m-p/587760#M27364 <P>why does the o2 messaging number keep changing......there are 2 numbers depending what tarriff ..........</P> Tue, 17 Dec 2013 13:28:02 GMT https://community.o2.co.uk/t5/Android/messaging-centre-number/m-p/587760#M27364 Anonymous 2013-12-17T13:28:02Z https://community.o2.co.uk/t5/Android/messaging-centre-number/m-p/587764#M27365 <P>One for contract and one for PAYG.<BR />Either is read off the sim card.<BR />If yours defaults to the wrong one it suggests you have the wrong sim card for your account.</P><P>You need to contact O2 (either phone or in store) to get the correct one for your account.</P> Tue, 17 Dec 2013 13:30:53 GMT https://community.o2.co.uk/t5/Android/messaging-centre-number/m-p/587764#M27365 MI5 2013-12-17T13:30:53Z