If you need to get the unlock code for the Tinno U304AA , the service provider can send you the unlocking code FREE, but you must meet certain requirements, such as being the original owner of the device and having completed the commitment period with the carrier. We know that sometimes it is complicated to fulfill this, since if it is a second-hand phone purchased or it is in another country it is going to be an impossible task, but do not worry! our Tinno servers calculate the official unlock code in a few minutes, unlock code and the instructions will be sent to your email after filling out the form and complete the purchase.
Yes, of course, the unlocking is never removed, you can update as many times as you want your device or even reset the phone. p>
You can use the Tinno with any SIM Card from Canada and from overseas, such as AT&T, Cricket Wireless carriers.
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 cellphone will indicate: "Unlock successful", becoming permanently unlocked.
4b.- If the step 3 code was wrong, introduce secondary code, and press OK.
AT&T & Cricket Wireless Device Unlock app method:
1. - Make sure you have an active data connection via mobile data or Wi-Fi.
2.- From the Application list, tap Device Unlock, the application is pre installed in your device.
3.- Choose the Permanent Unlock.
4.- Restart the device.
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