I've purchased a Redmi Note 4 because of Band20 for better coverage inside. I received my phone, but I am unable to connect to any 4G network. I select 4G in Settings / Networks, but it still falls back to 3G. It never connects to it, although when I do the networks search, I am able to select it, so the 4G radio works. I read somewhere that there seems to be a firmware issue ? Anyone seen this before and have an answer for me, please ?
GSM Info screen attached to post.
GSM Info screen attached to post.