I travel abroad frequently and need my cells to be unlocked for local use. This is the second time I have used Cellunlocker to unlock a Samsung phone (first the Galaxy S4 and now the Galaxy Note 4), and both times the phone was unlocked without a hitch. Fantastic communication. When their system was down over the busy holiday season, they promptly informed me of the situation and promised a quick response when the system was back up, which they delivered on. Great service, great price. I'll be back again and again with each new phone I get.