Required k550i sony ericsons mobile no network covrage solution and diagram

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The easiest way I can think of is by backing up your data onto pc the transfering the back up to where ever you want it. There are several programs on the net that should do this for you.

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Check whether the sim is inserted properly ...

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SOURCE: NEED PUK CODE FOR SONY ERICSON W850I

The PUK code is a code associated with the SIM card and not with the phone.

You have only two ways to get rid of the PUK code. Either you replace the SIM card , or you call phone provider that issued the sim cadr (eg. At&T, Virgin, Tmobile , Vodafone, Telecom etc.)

PUK means "personal unlocking key" .

The PUK code is asked if you enter a wrong pin 3 times.

You need to call the phone company that released the SIM card, they can retrieve the PUK code from a database for free.

In your case you need to contact your SIM card provider technical support to unlock the SIM.


The PIN and PUK are related to the SIM card, not to the phone.

If you replace the SIM card with a different one, then the phone will not ask for the PUK anymore. d dd

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now a days lots of sources avial across the globe to unlock mobile,inorder to that i found mobile unlock codes from a site for more details