Sony x peria j invalid sim card problem

[Aady]

hi, i'm using sony xperia j (ST26i). it was working just ok until a few days ago it showed the sign of "invalid card". i restarted the phone 4,5 times but the problem was same. i enter the sim card in other mobile to see if there was any problem in it, sim card was ok. so i enter the sim card and turn it on again but the problem was there, i slept and when i woke up the sim was working fine..until again after some hours the problem occurs again. i tried to find the solution on internet but nothing. now when i turn it off for a while and turn on again, the sim works perfectly and after 7,8 hours the phone again shows the "invalid card" sign. plz help me this is so frustrating, i want to fix this problem and sale this phone ASAP. plz help:(

Spoiler

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ps:  i have repair it with sony PC companion, but the problem still exists.

[Uliwooly]

@Aady

Could you test a different SIM card and/or get a brand new SIM card?

[Aady]

yes i did try another sim card, and sorry i forgot to mention, now i'm using other sim card and this is a new one, but the problem is same. 😐

[Uliwooly]

@Aady

Repair the phone with PCC and report back

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

[Aady]

sorry to mention but i have also tried repairing it with PC companion, nothing happend, worked for few hours and than again the problem occured. :'(

[Uliwooly]

@Aady

It could be a hardware issue, contact your local Xperia care to get it inspected

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

[Aady]

but if it is a hardware problem than why it is working for few first hours?

[Uliwooly]

@Aady

Perhaps the SIM card tray it's loose 

[Jake-SonyXperia]

Hi Aady,

It is possible that the SIM reader is not working correctly, that may explain the drop in reading the SIM card, for an issue like that, you would need to get the device to a service agent directly to clarify, try contacting the customer care team using my signature below.