I’ve a sony Ericson k750i mobile phone. I’ve recently purchased this mobile phone, I’ve changed default security code of my phone and given a new code, but when I restart my mobile phone and entered a new security code then it does’nt work. I don’t know why, please tell me what should I do to unlock my phone. please tell me some easy steps, I’m new in using this handset. Please give me some tips to resolve this issue. Please suggest me some tips.
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