you are experiencing the same condition as me. it seems that the network selection option may not available in same case. maybe you could try to re-install the os. however, i do not see any problem with this condition as it is actually set on automatic (2G/3G) so it will select the band itself depend on the network availability. i, personally, find this os is quite good especially on the battery life especially compared to my previous os (7.0) so i have not tried to re-install this os yet. hope that this will help.