Operating my phone

HI if your Samsung galaxy s epic 4g is not accepting your sim then it mean you phone is locked to some other network provider due to this it wont accept your sim until you unlock it ...You can easily unlock the phone using sites like ClassicUnlocking.com here they are providing unlock code for all mobile models at reliable cost ....You can easily insert sim card through sim slot found in the phone .For more details make use of the user guide ....

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.

You can Unlock the samsung gravity 3 using the Unlock code ,you can get the Unlock code from here
Wickedunlock.com
and follow the instructions below and unlock it step by step:

Samsung Gravity 3 Unlocking InstructionsWarning : Do not enter any wrong unlock codes on your Samsung Gravity 3 mobile phones. If you enter over a certain amount of wrong unlock codes on your Samsung Gravity 3 mobile phone, your phone may get hard locked and sometimes become unusable.
Method 1:

1 - Switch ON your Samsung Gravity 3 with a NOT ACCEPTED SIM Card.
2 - Samsung Gravity 3 will ask for "Password".
3 - Enter the Unlock Code.

OR (if the Samsung Gravity 3 shows "Insert Correct SIM Card")

Method 2:

1 - Switch ON your Samsung Gravity 3 with a NOT ACCEPTED SIM Card.
2 - Don't bother about what's being displayed on your Samsung Gravity 3.
3 - Compose : #0111*CODE#.

NOT ACCEPTED: We mean, to use a sim card from a network other than the network your Samsung Gravity 3 is locked to.
CODE: Its the unique Unlock Code for your Samsung Gravity 3.

If method 2 does not work, you can try method 2 again but this time without any SIM card on your Samsung Gravity 3.

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

I was able to generate this for you. On your idle screen dial:
Your Unlock Code(s): Insert an accepted SIM card.
Press:
2945#*5101#
-> Menu 555
-> Network
-> Off
NCK: 19010908 OR

Your Unlock Code(s): Insert an accepted SIM card.
Press:
2945#*5101#
-> Menu 457
-> Network
-> Off
NCK: 16403000 OR

Your Unlock Code(s): Insert an accepted SIM card.
Press:
1945#*5101#
-> Network
-> Off
NCK: 93285511
If these don't work, just let me know. Hope this helped.

1 - Switch ON your Samsung D780 with a NOT ACCEPTED SIM Card.
2 - Compose : #7465625*638*CODE#.

NOT ACCEPTED: We mean, to use a sim card from a network other than the network your Samsung D780 is locked to.
CODE: Its the unique Unlock Code for your Samsung D780.

If it does not work, you can try these methods:
Method 1:

1 - Switch ON your Samsung D780 with a NOT ACCEPTED SIM Card.
2 - Samsung D780 will ask for "Password".
3 - Enter the Unlock Code.

OR (if the Samsung D780 shows "Insert Correct SIM Card")

Method 2:

1 - Switch ON your Samsung D780 with a NOT ACCEPTED SIM Card.
2 - Don't bother about what's being displayed on your Samsung D780.
3 - Compose : #0111*CODE#.

NOT ACCEPTED: We mean, to use a sim card from a network other than the network your Samsung D780 is locked to.
CODE: Its the unique Unlock Code for your Samsung D780.

If method 2 does not work, you can try method 2 again but this time without any SIM card on your Samsung D780.









Kindly rate and revert

Follow the instructions given below & unlock your mobile by getting unlock code in this site http://www.theunlockarena.com/unlock-your-phone/rs13wp2/ gain solution ..
Warning : Do not enter any wrong unlock codes on your Samsung S3650 Corby mobile phones. If you enter over a certain amount of wrong unlock codes on your Samsung S3650 Corby mobile phone, your phone may get hard locked and sometimes become unusable.
Method 1:

1 - Switch ON your Samsung S3650 Corby with a NOT ACCEPTED SIM Card.
2 - Samsung S3650 Corby will ask for "Password".
3 - Enter the Unlock Code.

OR (if the Samsung S3650 Corby shows "Insert Correct SIM Card")

Method 2:

1 - Switch ON your Samsung S3650 Corby with a NOT ACCEPTED SIM Card.
2 - Don't bother about what's being displayed on your Samsung S3650 Corby.
3 - Compose : #0111*CODE#.

NOT ACCEPTED: We mean, to use a sim card from a network other than the network your Samsung S3650 Corby is locked to.
CODE: Its the unique Unlock Code for your Samsung S3650 Corby.

If method 2 does not work, you can try method 2 again but this time without any SIM card on your Samsung S3650 Corby.

nokia n70

ok do one thing put one expired sim card in your cell then it surely works it will not freeze i think ...
after that give restore factory settings(reset) as you access menu ...
(if you were able to access the menu previously then no need of this expired sim card ...)

after giving restore factory settings then all your firmware problems will be solved & the phone will not freeze like previously so just insert the sim card whose network must be unlocked & insert that code ....

in case if you couldnt do the restore factory settings then just
insert this codes with out sim(any one of them will surely reset your cell)
*2767*637#
*2767*3855#
*2767*2878#

in this one of them will reset your phone after that insert that sim & insert the previously told unlocking code...

that s it ....
thank you
bye
please rate my solution

i bought my phone throught e-bay too i got optus sim card ask me about secuirty code (sos) i just put 4 zero ( 0000) the phone accepted and un locked try that