K800i networked locked

Hi if your sony ericsson k800i mobile is rejecting your sim card whether it is diaplying messages like sim invalid ,sim lock and so on then it mean your phone is locked to some other network provider due to this you can't use other network sim in it until you unlock it .You can easily unlock your phone using sites like Unlocking4U.com they are rendering unlock code for all mobile models at reliable cost .You first check that whether the code is available for your country and network provider .If yes then pay for it and unlock your phone then freely use any GSM sim in it .

Hi here some ways to know which network locked your mobile. they are
1.You can ask the previous owner of your mobile about which network he/she used ..
2. Samsung galaxy gio is a Canadian CDMA mobile .So you try all Canadian CDMA network .If your mobile accept any network sim then it mean its locked to that network.
3.Sometimes locked mobile comes with logo displayed in the top of screen about which network it is locked .ie if it is locked to AT&T then AT&T logo is displayed in top of the screen.
Using the above ways you can identify the network to which your mobile is locked.Then free unlock code are untrustable many times .I guide you to have a look at Theunlockarena.com here they help you unlock your Samsung Gio s5660 mobile from network lock using code.

Try code from service provider.........

You should select network selection mode as Automatic.
After selecting Automatic code, restart device once.

http://forums.se-nse.net/topic/20668-who-wants-to-unlock-k800-db2020-cid52-for-free-with-supplied-dcu-60-cable/

how can get net work coverage in k800i sony ericsison mobeile phone

The chances are that the W375 is locked to Net10. The other Motorola phone you mentioned will work with the old SIM if the phone was previously used on Net10, or has been unlocked.

Most phones, upon issue, are locked to the network that provided the phone. If the other working phone is locked to a different network, speak to the Network it was previously locked to, and ask for an unlock code.

Try it anyway, you can't damage anything by doing so.

Hi,

The phone lock code has probably been changed by the previous owner. You should contact him and ask him for the code.