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If you still have the card where you removed the simcard just check on it they write it there, or if you dropped the card then Visit You nearest customer service center they will unlock the simcard for you.

Check Image for example

In LinkedIn, you can't edit contacts because the data comes from LinkedIn. You can only add or delete contacts. To delete a contact, go to my network then select connections. You'll get a list of your LinkedIn contacts which they call connections. Look for the little 3 dot icon or symbol near the name and tap on it, you'll see the delete option.

l would contact (listed here as a Sony) customer service to see if a reset is available that will set all back to default.........

Hi, I have had the same problem, its to do with the merging of Orange and T-Mobile networks to give you better signal coverage, but if you have an old phone or sim card, mine is over 12 years old, it wont automatically update, hence the error message. You need to call 150 from your mobile and ask them to send you a new sim card, which you will need to register when you receive it. Good luck, PS Dont bother going into the shop, they couldnt help me, although you could call from there.

PUK code is dipending on your SIM card number
a better way contact your SIM customer care to ask about PUK code

PUK CODE:

PUK code can be given only by your service provider which is specific for each and every mobile number.
Contact your sim customer care department over phone. Its free of cost to get the pin or puk no. If you cant contact through your phone get some other phone and contact them.
Go to the nearest service outlet of your service provider they can also help you.
There is no other go than the above procedure only your service provider can give it nobody else in this world nor any software.
Go to the below link and you can confirm that the above procedure works and there is a testimonial given by the customer too. http://www.fixya.com/support/t3079596-sking_puk_code

Check where You are saving your Contacts -

1. Make sure you know where you are saving your Contacts - - on your SIM or Phone Memory.

2. if on Phone - check folders

hope that helps
thanks