Phone not accept my sim card - Samsung Gt-c3300k Black Unlocked At&t Tmobile Phone

Hello. Is you phone not accepting any GSM SIM card? Then it must be a problem with the SIM port on your mobile phone. Get it repaired form local mobile store. Is your phone accepting only a specific network's SIM card and not accepting any other network's SIM card? Then the device must be restricted with the specific network. You need to unlock it by entering the unique unlock code. You can get the unique unlock code for a mobile phone from ProUnlocking.com at affordable cost with an easy unlocking guide. Good luck.

If the Nokia X6 16GB phone,displays invalid sim card message on the screen it is locked to some network.Please find out the network and country it is locked now.If it is locked to network,it will not accept other network sim card.But you saying it is accepting other networks sim card.How many network sim card have tried inserting in it?If you tried only one network sim card and it accepted that it is locked to that network.You can also try using some other network sim card.If it displays invalid sim message again.It is under network lock.To unlock it use unlock code.Visit the site Wickedunlock.com get code and unlock it easily.

Hello there,
If your phone is not accepting any other sim card, then it means the phone is sim card secured lock or protected, there are some phones that do not accept any other kind of sim card apart from that which they are made for.
For instance a phone made for vodafone purposes cannot accept etisalat sim cards, it will only accept vodafone sim card. Therefore that is what you are facing with the phone.
Take not, if you insert similar kind of sim you were iniially using, it will accept it.
That is why you cannot use another kind of sim on the phone.
Thank you for using fixya Caseytech

It's Because of Network Lock,It not accepting the Sim Card,you need to Unlock it from Network Lock,To use any Network Sim card,get the Unlock code at
http://www.superunlockcodes.com/supported-phones/rs12wp7/ and Unlock it.

hi

check whether that phone is a t mobile or not. mostly foreign mobiles will not accept some Sim cards.kindly format the phone with new OS this will able your phone to accept the Sim card.kindly ask the service to format the mobile. after formatting the phone will be support the Sim card..

thank you

the phone is too old to use

the reason your phone is not accepting other sims is because your phone is probably locked to the telephone service provider that you got the phone with.

if it has been unlocked but still doesnt accept other sims then you have to change settings in your phone
go to
Tools > Settings > General > Security > Phone and Sim card > Locked if SIM card changed and select "No".

cheers.

I think you have activated this sim only lock. This should be found under security menu. Try unlocking i first. If none works, you may consider flashing the phone if you need the phone working.

my nokia 6300 dosenot accept other sim card

Three reasons for this:

1) If you have just obtained the phone and have used your own sim card, your phone is more than likely locked to a particular network. That means that it will only work with a sim card that matches that same network. If you try to use a sim card for a different network, the phone will tell you the card is not accepted. You can obtain unlock codes for most cell phones so that any network will operate.

2) The phone, sim card or both are on a lost or stolen list and the phone has been blocked. If this is the case you can do nothing unless you are an expert. My advice would then be to take it to your local police.

3) Or the sim card is faulty or has poor contacts. You can try gently rubbing the gold coloured contacts with a cotton bud.