I have d980 which shows insert sim even when the 2 sim is present

Did you mean your phone shown no sim card inserted even your sim card present on your phone?
Yes,Means,There are three possibilities to get this type of issue.
1.There may be a problem in your Sim card so try another one.
2.Check your Sim whether it's properly inserted or not
3.Your mobile is locked to particular network provider.
If your problem persists,After trying first two ways means definitely Your mobile phone is restricted by some network so try to unlock your mobile phone.For unlocking you can approach your service provider or else try to buy an unlocking service from any one of the online unlocking service provider like
TheUnlockSpot.com

Did you mean your phone shown no sim card inserted even your sim card present on your phone?
Yes,Means,There are three possibilities to get this type of issue.
1.There may be a problem in your Sim card so try another one.
2.Check your Sim whether it's properly inserted or not
3.Your mobile is locked to particular network provider.
If your problem persists,After trying first two ways means definitely Your mobile phone is restricted by some network so try to unlock your mobile phone.For unlocking you can approach your service provider or else try to buy an unlocking service from any one of the online unlocking service provider like
SimpleUnlocking.com

Did you mean your phone shown no sim card inserted even your sim card present on your phone?
Yes,Means,There are three possibilities to get this type of issue.
1.There may be a problem in your Sim card so try another one.
2.Check your Sim whether it's properly inserted or not
3.Your mobile is locked to particular network provider.
If your problem persists,After trying first two ways means definitely Your mobile phone is restricted by some network so try to unlock your mobile phone.For unlocking you can approach your service provider or else try to buy an unlocking service from any one of the online unlocking service provider like
Unlocking4U.com

Did you mean your phone doesn't recognize your sim card even your sim card present on your phone?
Yes,Means,There are three possibilites to get this type of issue.
1.There may be a problem in your Sim card so try another one.
2.Check your Sim whether it's properly inserted or not
3.Your mobile is locked to particular network provider.
If your problem persists,After trying first two ways means definitely Your mobile phone is restricted by some network so try to unlock your mobile phone.You can unlock your mobile phone using network unlock code.It's the best way to unlock your phone.If you need an unlock code for your phone visit SuperUnlockCodes.com I hope it will be very useful to you.

Did you mean your phone shown no sim card inserted even your sim card present on your phone?
Yes,Means,There are three possibilites to get this type of issue.
1.There may be a problem in your Sim card so try another one.
2.Check your Sim whether it's properly inserted or not
3.Your mobile is locked to particular network provider.
If your problem persists,After trying first two ways means definitely Your mobile phone is restricted by some network so try to unlock your mobile phone.For unlocking you can approach your service provider or else try to buy an unlocking service from any one of the online unlocking service provider like
MobileUnlockSolutions.com

Hi whether you want to remove the sim lock in your samsung sgh-d980 mobile ..Then have a look at online sites like Mobileunlocksolutions.com here they render unlock code for all mobile models at reliable cost ...

From http://www.hard-reset.com/samsung-d980-hard-reset.html:

"Use this method to hard reset your Samsung D980 phone: Enter *2767*3855#. Warning! All your data including contacts, messages etc. will be lost! Copy all your necessary data/Contacts/Messages etc. to SIM or make backup to your PC before full reset! Take out SIM card before full reset."

you must select sim or phone directory you can see it above the screen which it has the mobile shape or sim card shape