Recent content by martingale2022

thanks for telling me this. but still confused . according to the link here, att does use band 4,5 which oppo k3 support. so I think it can still use the LTE. anyway, at least the phone should be able to make voice call, why ATT just ban voice as well?

I got an Oppo K3 phone which I purchased outside of ATT, I use 4G LTE without any problem for 2 years. recently I got a free phone from ATT and received a text saying my SIM card going to be deactivated due to my phone is not supported by ATT for the phase out of 3G. However my 4G LTE is not...