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My dad got the Samsung Galaxy S7 back in May and wanted to SIM unlock it shortly after because he travels a lot due to work. No rooting, just unlocking the phone to use with foreign carriers. At the time, he went to a local store that provided him with a code but it wouldn't work, they told him something along the lines of "this phone is too new and cannot be unlocked yet". I was really busy at the time so I couldn't provide more assistance unfortunately. He phoned Rogers (his phone provider) and was told that they could provide him directly with an unlocking code but he had to wait 3 months from the time of the purchase. He thought that was a much safer way to do it, so he waited.

Fast forward to now, and the code he was given wouldn't work. According to him, even after following the steps in this page from Rogers he gets a message that says "INCORRECT NETWORK UNLOCK ENTERED". He also attempted to get it unlocked at a local store (from the foreign country he's currently working at) to no avail. I believe they even tried a factory reset, and the SIM unlock still wouldn't go through. As time goes by he is getting more frustrated and I don't know how to help since we're in different countries. Is the phone hardlocked after many unsuccessful attempts? Can such a thing occur even after a factory reset? Also, do you think it would be possible to get the phone sent to warranty for this problem?

  • After a several incorrect unlocking attempts (5-10, I think most Samsungs are 10) the device will "hard lock" to the current carrier and can only be unlocked by sending it in to the manufacturer for reflashing, this is not an ODIN thing, you can't do it yourself, it must be done by Samsung. – acejavelin Oct 25 '16 at 3:55
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There are several ways you can unlock your Samsung as highlighted below. Unlocking by code is by far the safest method. Detailed instructions on how to obtain an unlock code can be found at point 3:

  1. You can ask your current carrier to unlock it. The law says they are obliged to do it, but the bad thing is that your phone must NOT be under contract.

  2. You can go to repair shop. They will unlock your phone by cable using a special software. The bad thing is that you have to leave your phone there for a few hours.

  3. You can use a third party phone unlocking service like this (SIM unlock Samsung galaxy). They will search and provide you with an genuine unlock code from the manufacturer's database. This is the safest method to unlock any phone.
  • Alternatively, some carriers Unlock phones for free at certain points. In the UK, for example, all phones on Three are unlocked, and all Vodafone phones can be unlocked for free after 6 months. Good answer though! – Dan Brown Oct 25 '16 at 7:32

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