Hello there....well its quite simple...there is nothing wrong with your phone ...its your SIM... if it is asking for a PUK (Personal Unblocking Key) code...call your subscriber and ask them for PUK code,entering this code will reset your sim
if u keep entering wrong your sim will be damaged so call them
If the error message is saying sim damaged call them and ask for a "sim replacement" you will get a new sim while you will retain the same number ,however you will lose the phone numbers and other data stored in sim,this can be free but it depends on the company and how 'customer friendly they are
you can also buy a new sim but that will change the number
the choice is yours now
Hope this help
Cheers
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hang my phone
Same issue. just pulled my ancient T68i out of the cupboard to give to one of my kids afer 2 years ++ of non-usage. Put muy sim and unlock code in, but next menu is "phone lock code"
i have no idea what it is now. I tried my standard one and it doesn't work. Wondering if battery flat so long it has completely reset.
Above solution does not work for this.
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