https://community.o2.co.uk/t5/Android/SIM-card-query/m-p/1465075#M77811 <P>I have a Samsung s21 device and it states I need sim1 and sim2 in the sim slot. It only came with one sim, what do I need to do?</P> Fri, 11 Jun 2021 15:27:20 GMT Anne-Marie87 2021-06-11T15:27:20Z https://community.o2.co.uk/t5/Android/SIM-card-query/m-p/1465075#M77811 <P>I have a Samsung s21 device and it states I need sim1 and sim2 in the sim slot. It only came with one sim, what do I need to do?</P> Fri, 11 Jun 2021 15:27:20 GMT https://community.o2.co.uk/t5/Android/SIM-card-query/m-p/1465075#M77811 Anne-Marie87 2021-06-11T15:27:20Z https://community.o2.co.uk/t5/Android/SIM-card-query/m-p/1465076#M77812 <P>No need to use two sims</P><P>You have the option of getting another sim for the second sim slot but it isn't necessary</P> Fri, 11 Jun 2021 15:36:16 GMT https://community.o2.co.uk/t5/Android/SIM-card-query/m-p/1465076#M77812 jonsie 2021-06-11T15:36:16Z https://community.o2.co.uk/t5/Android/SIM-card-query/m-p/1465077#M77813 You don't HAVE to use two sims.<BR />The phone has the option of having a second sim - say, for a work phone, or as an alternative/emergency on a different network. Fri, 11 Jun 2021 15:50:55 GMT https://community.o2.co.uk/t5/Android/SIM-card-query/m-p/1465077#M77813 gmarkj 2021-06-11T15:50:55Z