My Xperia M2 doesn't identify my SIM card

[Kekk13]

Hi,

my Xperia M2, after a reset, doesn't identify my SIM. In the internet setting, when i configure an apn, it says: "The setting of this access point aren't avaibles for this user". There is a strange thing....when i remove the SIM the xperia restarts with the message: "The SIM card has been removed, REBOOTING". WHY? Does It identify my SIM card....or no?

Thanks

[numbers19]

I have the same problem saying no SIM no service I have tried different SIM cards which work perfectly on other phones I have tried resetting the phone and the list goes on it was working properly up until a couple of days ago then got that message, pretty discusted as it is only 16 months old and money doesn't grow on trees Sony should either repair or replace as it isn't an isolated incident and Sony knows about it as there seems to be a lot for sale with the problem on a certain auction site. I am a loyal customer to Sony and have a lot of there products at home and have emailed them but I haven't heard back from them.