MY PHONE IS NOT ACCEPTING ANY SIM CARDS,its displaying "unredgestered sim.

Hi your phone not accepting your sim whether it is displaying any messages like sim invalid ,sim lock and so on once you insert your sim in it then it mean the phone is locked to some other network provider due to this it wont accept any other GSM sim until you unlock it ..You can easily unlock the phone through online providers like Unlocking4U.com here they are rendering network unlock code for all mobile models at reliable cost .You first verify that whether the code is available for your mobile model ,country and network provider .If yes then pay for it and unlock the phone then freely use it with any GSM sim ...

Activate phone SIM card or other device Copy Transfer Contacts to New Phone AT Wireless Support

The lock does not appear to be on the phone as the old SIM works. The lock is in the new SIM. You have to call the phone company or if you have the PUK code for the SIM you can go to the phone company's website and check how you can unlock the SIM card.

Whether your Blackberry Bold 9780 not accepting other network sim card?It is because of network lock.Without unlocking you cannot use other network sim card in it.To unlock it you can use unlock code.Get the unlock code from the site Unbblock.com and unlock it from any GSM network sim card.You cannot use CDMA network sim card in it.Check unlock code is available for your network and country,if it is available get it and unlock it.Then use any GSM network sim card.It won't display invalid sim or ask for an unlock code.Good Luck.

If your mobile is locked to a particular network you need to unlock your mobile to use it with other networks(Sim cards). Use unlock code to unlock your phone. Get the free code from the site Unlocking4free.com ,for old model mobiles. Unlock it yourself using unlocking instructions.

what message does it display? insert sim? invalid sim? sim rejected? what model, make?

i purchased a nokia n8 copy version in bankok. now in india even after inserting the sim cards, it is not accepting. how to make phone to configure the sim cards?

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

reverse ur sim cards and then restart ur phone then it will not ask for the passcode

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.