I bought Nokia 6 in India 6 months ago in Amazon.in, it was working fine with Airtel 4G, I moved to US a month back for a long term deputation and switch to Lyca carrier, since then the 4G is not working and connecting only 2G. I put the SIM on another mobile bought in US, it connects 4G seamlessly.
Looks like the mobile variant is not a global one, it's not matching the US band frequency.
Any ways to update the firmware to match US band or it's hardware related?
Thanks in advance.