What is the meaning of card locked? - Acer CE-5330 Digital Camera

If the Sim card Not support means it may locked to network.You need to unlock it...You can get the network unlock code from the site Onlinegsmunlock.com/samsung/rs7wp8/ for SAMSUNG GSM Network locked Phones and unlock it from Network lock.You need to specify the Model?
ALSO check whether it not support only one Sim card,if that problem means it may CDMA Network,OR may Sim card problem.If it not support other Sim card and support only one Sim means it's Under Network lock,You need to find the network,country it locked now and unlock it using the Unlock code,Only GSM Network lock Phones can be unlocked,CDMA network locked Phones cannot be Unlocked from the Mobile Phone.

It's locked to some Network means You cannot use it in other country ,It's not Locked to other network means ,i mean it's unlocked means you can use with any GSM Network sim card,It locked means you need to unlock it.To unlock it,you can use the unlock code,You can get the unlock code and instructions from the site Onlinegsmunlock.com
unlock it,then use with other GSM Network Sim card.

It's not reading Only T-Mobile Sim card ?It's not reading other sim card also Expect Only One Sim card?
If it reads only Sim card and not reading Other Sim card like for Example T-Mobile,AT&T,Orange etc means it locked to Network ,you have to Unlock it To use any GSM Network Sim card,What is Mobile Phone Brand and Model?Find the Network ,Country it locked now? then first please You can find it locked To GSM Network or CDMA? Network CDMA Network means You cannot Unlock t to use any gsm Network Sim,Gsm Network Lock means You can Unlock it to use other Network Sim card...You can Unlock it using the Unlock code,You can get the Unlock code and instructions at here
Unlocking4u.com and Unlock it from Network Lock,then you can use with T-Mobile Network surely.

It locked to security code or password means get the code from service provider and reset it.If it locked to Network means find out in which Country's Network it locked Now?
then Unlock it,use any GSM network Sim card,to find out it locked to network or not ,You insert other Network GSM Sim Card in the Phone if it support means it's not locked to any Network.If it not accepts the Other Network Sim means It locked to Network .So you need to Unlock it.Get the Network Unlock code here
Theunlockarena

If the Apple's I-Phone is not detect the Sim Card you inserted means it locked to some Network....find in which Country's Network locked now?
then get the remote I-Phone Unlocking service at
Onlinegsmunlock and Unlock it,then You can insert any GSM network Sim card in the Phone it will detect.....Check whether it locked with GSM or CDMA network GSM network means can be Unlocked from Network lock....CDMA network lock means cannot be unlocked....after unlocked it you can use Only GSM Network Sim card...

If you can't able to use the Phone with Other Network Sim Card?
means it locked to Some Network,first Find out the Country ,Network it locked now!!It's GSM network lock means easily Unlock,CDMA Network Lock means You cannot Unlock it,get the Network Unlock code form here
Superunlockcodes.com and Unlock it,then use/activate Lebara Sim card purchased here in Spain..

Yes card locked means litrarily "card is locked." So you must unlock it.

Eject the memory card and take good look it. On one of the edges you will see a very tiny "latch." Slide it to the other side, and the card is unlocked. One position is the locked position while the other is the opened position.

Look at your memory card. SD cards have a slide switch along one edge. The position farthest from the metal contacts locks the card, protecting it from writes. The position nearest the contacts unlocks the card.

It means the SD memory card has a little switch on the side that is in the "locked" position. Remove card, move switch, re-install, and you should be good to go.