Cannot detect sim

Solution
Did you try turning it off, removing the SIM card. Making sure there is nothing in the slot (dust, debris, etc.), putting the SIM back in and turning it back on?

If it still won't work, try the SIM in another device and see if it will show the service on that device. If it does, then there is a problem with yours reading it. You may need to have the phone looked at.

However, if it won't connect to your service when putting the SIM in another device either, then there is something wrong with the SIM card. You should contact your carrier/service provider and have them get you a new one.
Did you try turning it off, removing the SIM card. Making sure there is nothing in the slot (dust, debris, etc.), putting the SIM back in and turning it back on?

If it still won't work, try the SIM in another device and see if it will show the service on that device. If it does, then there is a problem with yours reading it. You may need to have the phone looked at.

However, if it won't connect to your service when putting the SIM in another device either, then there is something wrong with the SIM card. You should contact your carrier/service provider and have them get you a new one.
 
Solution