Why is my phone not detecting the SIM card even though it's there?

[Jessica Mei]

I tried taking out the SIM card and placing it back in, restarted the phone and still it displayed the notice "Phone detect no sim card". how can I fix this problem?

 

[anon(153966)]

Is it an unlocked device, or did you buy it directly from your carrier?
Also, sometimes, you have to get a newer SIM card.

 

[Jessica Mei]

Bought it from a Mobile store, only one year old.