I have an M33 that I purchased recently. I've registered the device and activated yesterday using Airtel SIM. How long do I have to wait before using an overseas SIM in India? Thanks

As USSD code ##786# for RTN status is blocked by Samsung, I used a third party app to check status. The M33 phone I purchased from Samsung App shows as refurbished. IMEI SV also shows 01 instead of 00. I got the same result testing with another M33 d...