Warning: Do not enter any wrong unlock unlock codes on your Fujitsu f503i 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 Fujitsu f503i with a
Not ACCEPTED SIM Card.
2. If your Fujitsu f503i asks for a PIN code, then enter your SIM card PIN and press OK.
3. Fujitsu f503i will ask to enter an "unlock code".
4. Enter Unlock Code we send to you.
5. Your Fujitsu f503i is now unlocked.
*NOT ACCEPTED : We mean, to use a Sim card from a network other than the network your Fujitsu f503i is locked to.
Each Fujitsu f503i mobile phone has an unique unlock code. You can buy the unique unlock code for your Fujitsu f503i mobile phone at www.mobileunlocksolutions.com.