My phone locked uim card so i can not use sim card. please tell me how to unlock it. my phone model Hauwei c8812 cdma

you can solve your problem easily,your uim card which is rejected by sim :firstly your uim card insert correctly or not secondly your sim card placed correctly or not if not both you insert the card correctly otherwise your must be phone off because sometimes phone hanged.

GT-3312 MASTER CODE PLEASE HELP

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 locked to wrong Network means what?Please specify that,You need to Unlock it?You need to specify the brand and model?you can unlock only GSM Network locked Phones,You cannot unlock it from CDMA network Lock,you can get the Unlock code from the site
Theunlockspot.com
and unlock it from Network lock........then you can use with any GSM Network Sim card.You cannot use with CDMA Network Sim card.

You will most likely have to purchase a new sim card as some phones are sim card specific. Also try a jail breaking program or have it done.

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.

When you place a new or a existing SIM card from another phone provider into your mobile phone and it asks for a Security code then :-
This phone is locked to the original mobile phone provider. You need to contact this mobile provider to ask for the unlock code (security code) for this phone. You need to provide proof of ownership etc and the phone's unique IMEI number which is located inside the phone under the battery. They use this number to generate the unlock code for your phone.
They should provide you with instructions on how to enter this code into the phone.
Once you unlock the phone, then you can insert a new SIM card in this phone or sign up with another phone provider using this phone.
You could ring the phone provider and ask for the unlock security code because you are going overseas and wish to use your phone with a prepaid SIM card from another country. This maybe a free service.
The other way to get your phone unlock is to use a phone unlocking company on the Internet, they usually charge a couple of Dollars for their services. Use Google and search for "Security unlocking code” companies in your area.
You can also try this WEB site :-
http://www.mobileunlockguide.com/mobile-phone/

try the universal code: 00000

i have nokia 6275 when i insert sim it will says uim card rejected. what i do

heyy

dial *3001#12345#

u get the serial no in list

thats u r imei

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