https://community.48.ie/t5/Phones/Why-did-I-lose-all/m-p/39850#M212 They were probably saved on your sim.<BR />Put the old sim back in and copy/move the contacts to the phone.<BR />Then put your 48 sim back in.<BR />This is not a 48 issue per se.<BR /><BR />Hope this helps. Sat, 26 Mar 2016 23:21:13 GMT dalyer 2016-03-26T23:21:13Z https://community.48.ie/t5/Phones/Why-did-I-lose-all/m-p/39846#M211 Why did I lose all my contact numbers when I changed over Sat, 26 Mar 2016 17:57:48 GMT https://community.48.ie/t5/Phones/Why-did-I-lose-all/m-p/39846#M211 tracey 2016-03-26T17:57:48Z https://community.48.ie/t5/Phones/Why-did-I-lose-all/m-p/39850#M212 They were probably saved on your sim.<BR />Put the old sim back in and copy/move the contacts to the phone.<BR />Then put your 48 sim back in.<BR />This is not a 48 issue per se.<BR /><BR />Hope this helps. Sat, 26 Mar 2016 23:21:13 GMT https://community.48.ie/t5/Phones/Why-did-I-lose-all/m-p/39850#M212 dalyer 2016-03-26T23:21:13Z https://community.48.ie/t5/Phones/Why-did-I-lose-all/m-p/39855#M214 Did that help at all? Sun, 27 Mar 2016 10:00:39 GMT https://community.48.ie/t5/Phones/Why-did-I-lose-all/m-p/39855#M214 dalyer 2016-03-27T10:00:39Z