Sim Card inserted,Phone restarting (all the time)

[Moskri]

When i use my phone (playing games,on facebook,even when calling) the phone gives me a message 'Sim card inserted' phone powering off and when it turns on,is like there isn't a sim card in,and after like 5+ restarts he has the sim back,or stays the same,please help i just bought this phone like 2-3 days,thanks.

[Ashroft98]

Have you tried using the sim card using other phones?

Have you tried other sim cards on your phone?

How old is your sim card?

That might happened because if there's a faulty sim card/sim card reader.

[Moskri]

i just got my sim card with the phone form the story,and the phone is brand new,the sim is micro(no adapter,no cutting,brand new),i tried on my tablet asus fonepad,and it works great

[Ashroft98]

So you've tried the other sim cards with the phone?

[Moskri]

it works great on my tablet and it dosen't restarts all the time like on the phone

[Ashroft98]

What i meant was,have you tested using other sim cards on your Xperia C?

This might become a faulty hardware problem

So just to make sure , contact your local Sony Xperia

http://support.sonymobile.com/global-en/contactUs/

[Uliwooly]

Even if the SIM card work on other devices, it will be wise to get a brand new SIM card, make sure to get the correct size. 

[tomasliak_1]

Try to put the Sim card correctly.mine Sim when I bought the phone didn't plug correctly and I was having the same problem with you.try to push the Sim inside.the restarts of your phone are because the Sim don't plug correctly.