I live in Germany and recently bought Galaxy note 9 which is working fine with Germany telecom provider sim (O2). I have to travel out of Germany a lot because of work and need to use local sim card in that particular country because of high international roaming charges. But my phone showing regional lock and do not accept any other sim card. I am sure that I have used my phone to call from German local sim card to another local number more than 1 hour but still my phone regional lock is not removed. I contacted German support using email and provided my phone serial number along with purchasing bill as suggested in one post in Samsung forum but still no reply. Please help me.
I have called with local German number to other German number with singl2 call more than 10 min and cumulative call time with different calls would be more than 1 hour. Also my phone is sim free so it is locked with any particular carrier.