My partner has a LG G3 (D852, unlocked from T-Mobile when we lived in the States) and everything works on it with the exception of data over LTE. Data works fine on HSPA, but when it goes to LTE it shows the send/receive arrows but with nothing actually loading. Have double checked APN settings and the D852 supports Band 4 LTE. I've had to turn LTE off, but I'd really like to get it working. Any suggestions?