This device always request the SIM network unlock PIN when you insert a SIM card of another service providers. You can get the unlocking code totally FREE calling to the carrier, but only if certain requirements of the contract are met. The best option is to get the OFFICIAL Samsung unlocking code with us, this code is usually calculated in minutes and unlock the terminal forever.
1. - Turn on the handset on with a SIM card not accepted by the device (your new network operator)
2. - If the card has a PIN number, enter it and press OK.
3. - The device will prompt: “Network lock”, Now enter the code and press OK.
4. - Your phone will indicate: "The operation was successful", becoming permanently unlocked.
Unfreeze code: If the code in step 3 does not work, type the secondary code and press Unlock, the phone will indicate Unlock fail, now dial the code again from step 3.
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"Thanks! my phone was unlocked in minutes!"
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"Puede desbloquear mi Samsung SM-J700T de T-Mobile en pocos minutos. Gracias"