Yes, you can use your Ryoko with a SIM card from your local internet or mobile provider.
To do it safely and easily:
- Power off your Ryoko and use the special SIM pin to open the SIM slot.
- Insert your local provider’s SIM card in the correct orientation, then close the slot and turn the device back on.
Ryoko will then use the data from that SIM. Just keep in mind that any special Viaota-only features (like usage shown on screen or built‑in ad blocker) work only with the original Viaota SIM.