Warning: Do not enter any wrong unlock unlock codes on your Geo GC688 mobile phones. If you enter over a certain amount of wrong unlock codes on your mobile phone, your phone may get hard locked and sometimes become unusable.
1. Switch ON your Geo GC688 with a Not ACCEPTED
2. If your Geo GC688 asks for a PIN code, then enter your SIM card PIN and press OK.
3. Geo GC688 will ask to enter an "unlock code".
4. Enter Unlock Code we send to you.
5. Your Geo GC688 is now unlocked.
: We mean, to use a Sim card from a network other than the network your Geo GC688 is locked to.Each Geo GC688 mobile phone has an unique unlock code. You can buy the unique unlock code for your Geo GC688 mobile phone at www.mobileunlocksolutions.com.