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Sierra Mobile Unlocking Instructions And Guides:

Sierra TiGR 155R Unlocking Instructions

Warning: Do not enter any wrong unlock unlock codes on your Sierra TiGR 155R 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 Sierra TiGR 155R with a Not ACCEPTED SIM Card.
2. If your Sierra TiGR 155R asks for a PIN code, then enter your SIM card PIN and press OK.
3. Sierra TiGR 155R will ask to enter an "unlock code".
4. Enter Unlock Code we send to you.
5. Your Sierra TiGR 155R is now unlocked.

*NOT ACCEPTED : We mean, to use a Sim card from a network other than the network your Sierra TiGR 155R is locked to.

Each Sierra TiGR 155R mobile phone has an unique unlock code. You can buy the unique unlock code for your Sierra TiGR 155R mobile phone at
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