My lg phone has a network service problem my sim card does not read pls help me

You can Unlock the LG XENON GR500 model Phone using the Unlock code,You can get the Unlock code and instructions from here
Classicunlocking.com and Unlock it from Network Lock....


LG GR500 Xenon Unlocking Instructions

Warning : Do not enter any wrong unlock codes on your LG GR500 Xenon mobile phones. If you enter over a certain amount of wrong unlock codes on your LG GR500 Xenon mobile phone, your phone may get hard locked and sometimes become unusable.
1 - Switch on your LG GR500 Xenon with a NOT ACCEPTED* SIM Card.
2 - LG GR500 Xenon will display "phone restricted" Select "Cancel".
3 - LG GR500 Xenon will display "phone restriction code" Enter the Unlock code. Select "OK".
4 - The handset is now successfully unlocked.

*NOT ACCEPTED : We mean, to use a sim card from a network other than the network your LG GR500 Xenon is locked to.

(OR)

1 - Switch ON your LG GR500 Xenon with its ORIGINAL SIM Card.
2 - Enter2945#*9701#.
3 - A menu will pop up, Select Sim Unlock.
4 - Enter your Unlock Code and press OK.
5 - The LG GR500 Xenon will then reboot and the unlock is complete.

ORIGINAL: We mean, to use the sim card that was originally given to you by your network/service provider along with the LG GR500 Xenon.

(OR)

1 - Switch on your LG GR500 Xenon with a NOT ACCEPTED* SIM Card.
2 - Type *#865625#.
3 - Enter the unlock code twice.
4 - LG GR500 Xenon should say: Network Lock Deactivated.
5 - LG GR500 Xenon may automatically reboot and is now unlocked!

NOT ACCEPTED : We mean, to use a sim card from a network other than the network your LG GR500 Xenon is locked to.

It locked to some network find that network,country it locked now,?then model of LG ....try code from here Unlock-Free.com/LG and unlock,then use any gsm network provider's SIM CARD.

you can check it with other sim card ,if it remains the same problem ,it may be locked to particular network wont accept any sim card other than the particular network ,you can unlock it and used to other network,try here http://www.mobile-unlocker.com/lg-gr500-xenon/rs2wp9/

Mobile phone manufacturers make GSM phones with a SIM lock, a built-in capability to restrict the use of these phones to specific countries and network providers. In this way, phones can be locked to only accept SIM cards from a specific country, network or service provider, or only a particular SIM type. In fact, most mobile phones are shipped with country and network provider locks these days. Unlock SIM card. It is now either mandatory or voluntary for the provider to unlock the SIM card of the customer. Still, some providers are reluctant on doing it even after a customer has fulfilled their service contract. A few others will unlock the SIM card of a customer only if he/she has an active account in good standing for at least 90 days. Some network providers charge a fee for releasing the unlock code. Unlocking laws vary from country to country. For example, in Belgium, networks are not allowed to sell locked handsets. In The Netherlands, providers must provide unlocking codes, but are permitted to charge a fee for this during the first 12 months after purchase. The Hong Kong government does not allow networks to sell locked mobile phones, though the restriction does not apply to some PDA phone models, such as those offered by BlackBerry. In the US, unlocking is now legal. Unlock SIM card and special codes. You can unlock a handset by entering a special code, or in some cases, over-the-air by the carrier. In most cases, a locked phone will display a message if a restricted SIM is used, asking for the unlock code. The code needed for removing all SIM locks from a phone is called the master code or network code key. The phone itself verifies the unlock code, which is either stored in a database or calculated with the help of a complex mathematical formula supplied by the provider.

that means that your phone is blocked.u have to go to a phone service and ask them to unlock your phone.it's probably something around 20-25 euros

plse reive gprs setting plse call your sim card customber care

The LG Rumor is a Sprint CDMA device. This means that it is activated on a network using the Electronis Serial Number programmed into the device. Once the device is powered up, it registers to the network and if that ESN doesnt match an active acct, then no service, and you may get a message asking you to activate your device. Sim cards are only in GSM devices (not including nextel and a few devices that have been dubbed world phones, allowing them to work on both CDMA and GSM services.)

So, all this was to explain simply that you can never put a sim card in a LG Rumor. There is nowhere for it to go. SRY!!!!!
PLS RATE THIS POST AS FIXYA.

fastunlocking.blogspot.com try this service, very fast and trust.

either your phone is locked or your sim is faulty and no longer works...have u tried another sim in there to see?

try www.mobile2mobile.net or try a mobile service center or mobile tech in your area.