I bought a rare version of Galaxy S10 which was out-of-stock in my country so the distributor got it for me from another country. But by mistake the phone is locked to original network operator in the country of origin. I was offered to send the phone back for unlocking/change but it can take a few weeks. So I decided to try online unlocking service. All looks good except of the requirement to do the unlocking via side-loaded app instead of entering the code directly. Is it normal that the 8-digit unlock code does not work directly in unlock screen but it needs a helper app?
A quote from the e-mail after purchase of unlocking code:
First of all please make sure that your phone is on the stock factory firmware. This is very important. Unlock code will work correctly only on the stock factory firmware.
- Connect your phone to wi-fi network
- Download and install on your phone official Network Unlock tool: https://www.htconlineunlock.net/Network_Unlock.apk
- Power OFF the phone (long press on power button -> Power off)
- Pull out the sim card from the phone and Switch ON the phone
- Run the Network Unlock tool
- Click 'Continue' button and wait until your phone will connect to server
- The phone will ask you to enter Sim Network Unlock Pin
- Enter the code, click 'Unlock' button and wait for result
- After getting "Device is Permanently Unlocked" message press the power button, choose 'Restart' and click 'OK'.*
They claim they bought the code directly from the operator. So why direct unlock does not work (I made one attempt) but I am instructed to run an app?