danarama
Casual Member
Fyi I've replied to this with a screenshot but it's awaiting moderation. Please bear with me.Three don't own any spectrum on B7 (EE and Vodafone are the only providers with that spectrum) - forcing this will lose connectivity if using a Three SIM.
If you are not getting any signal with B3 either than that would suggest you're only able to receive B20 - if so, the speeds for that are likely to be very low - you don't say what speeds you are able to achieve so can't be certain.
You might might be aggregating B20+B32 which would give a higher download speed.