- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
The most common thing for any mobile/cell phone.
Easy fix simply take an eraser & rub over the contact of the sim card then making sure not to touch the sim cards chip re-insert in to the phone & it should be problem solved. If the problem still exists insert in to another phone if possible to test the integrity of the sim card if the sim card works in another phone it could be the phone you are attempting to use it maybe faulty or the sim card is incompatible or the phone is not unlocked entirely, if it doesn't work in another phone the sim card has failed & a new sim card is required.
If your LG CU500 says Invalid Smart Chip,It's locked to some network...You need to Unlock it from service provider lock to use other CHIP(sim card)..find the current network,country it's locked now and get the unlock code from the site Simpleunlocking.com/lg-cu500/rs16wp9/ for LG CU500 and unlock it easily.
If the LG VU CU920 Says Invalid Sim means it locked to network.You need to Unlock it...You can get the Unlock code from here Simpleunlocking.com/lg-vu-cu920/rs16wp9/ and Unlock it from network lock...Find the Network ,Country it locked now..Then unlock it.After Unlock it use with any GSM Network Sim card.
Cut a small piece of cardboard or credit card plastic similar in shape to -- but just a bit smaller than -- the smart chip. Place the piece on top of the smart chip. Simultaneously slide both the smart chip and the piece of cardboard/plastic into the smart chip slot. Make certain you are inserting the smart chip with the proper end inserted first and with the contacts uncovered by the extra piece (On the LG Vu, the smart chip contacts will face down and the missing corner will be showing on the outside of the slot when the card is inserted properly.). If that doesn't do the trick -- see your cell phone provider and/or get a new phone.
You have to take the battery out and you will see a slot for your sim on the right side. Make sure the gold connectors are pointed downward and the angled corner is pointed outward, meaning that the angled corner does not go in first.
The first thing to try is cleaning the contacts for the smart chip, on the phone and the chip itself. Use a little rubbing alcohol on cotton buds and be careful you don't bend the contacts in the phone. If that doesn't remedy the problem, get your service provider to give you a new chip. They should be willing to give you one for free. If that doesn't fix it, then it is probably a phone problem. You may go to your service provider or any nearest mobile phone repair shop to have it fixed. You may also have the phone replaced if your budget allows it.