Question about Samsung Cell Phones
Do you have, or can you borrow another SIM card to check your phone?
Is your phone locked to a specific
If the phone works with the alternate card, then your SIM may be damaged.
If so you can purchase another SIM card from your provider and they should then be able to transfer your subscriber information to the new SIM card.
If when you connect you get a Network Lock message and a dialog box to enter a key, the phone is most likely locked to a specific carrier and you need the unlock code to proceed.
Do you have an unlock code?
Posted on Nov 26, 2017
This seems to be the multimillion dollar question for Blackberrys and here is how this works.
There is no "magical"code for all BB's
Each Blackberry is item specific based on your IMEI which is located on the inside of your battery compartment.
Your best bet is to go to eBay or similiar and find your blackberry and look for the cheapest unlocking program. AT that point you will be able open your Blackberry.
Posted on Jan 08, 2008
SOURCE: Invalid sim
That's cause your phone , you buy bundle with sim card, so provider protect phone to use sim by other provider, or you ever set phones password to use sim, if nothing like that go to service center to solved your problem.
Posted on Nov 01, 2008
SOURCE: a message pops up saying: Invalid or missing sim card. You can still make emergency calls if your service provider supposrts it. I have a sim card in their but i guess it doesn't read it?? HELP ME PL
Is this phone from the same service provider as your simcard? If not, not all phones are unlocked to work with the sim cards of rival companies. If both the phone and sim card are from the sam company, then you can have the company replace your sim card. They usually do this for free as a courtesy as long as you explain the problem to them. Hope this helps
Posted on May 09, 2009
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