https://community.sony.com.mk/t5/xperia-archive/preferred-network-mode/m-p/3270440#M411065 There is no longer gsm only so which is the most battery efficient? Tue, 08 Jul 2014 06:38:46 GMT skuzzbag 2014-07-08T06:38:46Z https://community.sony.com.mk/t5/xperia-archive/preferred-network-mode/m-p/3270440#M411065 There is no longer gsm only so which is the most battery efficient? Tue, 08 Jul 2014 06:38:46 GMT https://community.sony.com.mk/t5/xperia-archive/preferred-network-mode/m-p/3270440#M411065 skuzzbag 2014-07-08T06:38:46Z https://community.sony.com.mk/t5/xperia-archive/preferred-network-mode/m-p/3270441#M411066 <P>Most battery efficient is GSM only,how come that is not available anymore?</P> Tue, 08 Jul 2014 08:49:44 GMT https://community.sony.com.mk/t5/xperia-archive/preferred-network-mode/m-p/3270441#M411066 _alexdon_ 2014-07-08T08:49:44Z