https://community.o2.co.uk/t5/Other-Devices/nokia-lumia-720/m-p/1078144#M51242 <P>nokia luia 720 screen frozen. tried holding side buttom. but nothing happens. I have an old phone and want to put my sim card in there until I can get to o2 shop. but its asking for pin no.</P><P>can you help</P> Wed, 11 Oct 2017 07:08:05 GMT peter8 2017-10-11T07:08:05Z https://community.o2.co.uk/t5/Other-Devices/nokia-lumia-720/m-p/1078144#M51242 <P>nokia luia 720 screen frozen. tried holding side buttom. but nothing happens. I have an old phone and want to put my sim card in there until I can get to o2 shop. but its asking for pin no.</P><P>can you help</P> Wed, 11 Oct 2017 07:08:05 GMT https://community.o2.co.uk/t5/Other-Devices/nokia-lumia-720/m-p/1078144#M51242 peter8 2017-10-11T07:08:05Z https://community.o2.co.uk/t5/Other-Devices/nokia-lumia-720/m-p/1078145#M51243 Pull the battery out the phone and leave it for 5 mins, then try again.<BR />As for the PIN on old phone, it will be whatever you set it to be previously. Wed, 11 Oct 2017 07:24:06 GMT https://community.o2.co.uk/t5/Other-Devices/nokia-lumia-720/m-p/1078145#M51243 MI5 2017-10-11T07:24:06Z https://community.o2.co.uk/t5/Other-Devices/nokia-lumia-720/m-p/1078193#M51244 <P>Default sim pin is 0000 unless you have changed it. If you are putting the sim in an old Nokia you may have to use 12345</P> Wed, 11 Oct 2017 11:53:58 GMT https://community.o2.co.uk/t5/Other-Devices/nokia-lumia-720/m-p/1078193#M51244 jonsie 2017-10-11T11:53:58Z https://community.o2.co.uk/t5/Other-Devices/nokia-lumia-720/m-p/1078486#M51246 <P>Hey&nbsp;<a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/2950827">@peter8</a>&nbsp;did the above advice help you unlock your phone?&nbsp;</P> Fri, 13 Oct 2017 08:56:23 GMT https://community.o2.co.uk/t5/Other-Devices/nokia-lumia-720/m-p/1078486#M51246 Martin-O2 2017-10-13T08:56:23Z