When you purchase a Sunmi V1 from a third-party vendor (like a payment processor or a bank), the device often comes "locked." This means you are trapped inside a specific payment app (like SumUp, iZettle, or Clover), cannot access the full Android settings, or are blocked from installing third-party APKs.
If you can enable USB Debugging, you can use a PC to remove the restrictions: Connect the V1 to your PC.
: Insert a non-supported SIM card; the device should prompt for the "SIM Network unlock PIN". Google FRP (Factory Reset Protection)
Using tools found on GitHub to overwrite the restricted OS with a "Global" or "Stock" version. If you'd like to proceed with an unlock, tell me: Does it currently have a Deliveroo/Just Eat logo on boot? Do you have a Windows PC and a Micro-USB cable ?
