If i go in to settings for mobil network and change network modus from default GSM/WCDMA/LTE auto to any of the other options-only WCDMA-only GSM or GSM/WCDMA auto i instantly get full lines in antenna signal. If i dont use the LTE setting i wont get 4G speeds. Damn it this is doing my head in. Also when i use LTE and activate mobil network i get a 4G icon top of the screen, as i should, and still 0 lines in the GSM. But as soon i make a call the GSM lines go to full and the 4G change to 3G and H. As soon as the call is over it goes back to 4G ans 0 lines. Long term evolution my behind.