I have a Nexus 4 and live in a strong O2, 900Mhz 3G area, My Nexus displays H+ but for the life of me I can't get my Lumia to connect to 3G, It displays either E, or G, I have 3G selected as highest speed so why will it not detect 3G, I know on my Nexus I can select WCDMA only which means the phone only picks up 3G, can't see such an option on the Lumia. Anyone any ideas?