https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280269#M31445 <P>Hi, change to 3G it works fine</P><P>Have a nice week end</P> Fri, 15 Apr 2016 11:20:48 GMT jaspita 2016-04-15T11:20:48Z https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280263#M31439 <P>Hello dear members, My signal sometimes losts and it can last for hours and sometimes last for days! i've been trying to restart the phone and re-insert the simcard but nothing, I switch the simcard to another phone and it works just fine on the back up phone, I bought my SE Z LTE in Singapore anyway, and I'm in Indonesia, can it be possible the cause of the problem?? what should I do?&nbsp; if I need to flash it, is there any specific firmware should I use for indonesia region? thank you, I'm so suffering because of this problem..<BR /><BR />Best Regards, Thanks<BR /><BR /></P><P>someone please answer.</P> Tue, 19 Aug 2014 08:02:56 GMT https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280263#M31439 Dhicky_Carey 2014-08-19T08:02:56Z https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280264#M31440 <P>Sorry to hear that you're having network issues.<BR /><BR />Was the other phone you tested your SIM in also an LTE phone?<BR />What happens if you set your Z to GSM/WCDMA under Settings -&gt; More -&gt; Mobile networks -&gt; Network mode.</P> Tue, 19 Aug 2014 08:55:44 GMT https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280264#M31440 Rickard 2014-08-19T08:55:44Z https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280265#M31441 <P>thanks for replying, no, the back up phone was Iphone 4s, and I don't like to use it anymore since I bought my Z, but the signal problem really dissapoints me. I've tried to switch the netowork mode, GSM only, WCDMA only and everything on the list, still nothing, I downloaded an app called "signal meter" it does detect GSM signal, but the bars still empty, I suspect it because my Z is using Singapore firmware? can it be possible? thank you</P> Tue, 19 Aug 2014 16:56:17 GMT https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280265#M31441 Dhicky_Carey 2014-08-19T16:56:17Z https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280266#M31442 solved! i lost signal for days! i downgraded the os, no luck. re upgraded, no luck. restart the phone, reinsert sim card, switching network mode no luck. it is obvious the hardware issue! but since i have lost my warranty, i found a way to get the signal back. the radio antenna is located at the lower part of the phone! the flat part under the bottom of the screen. i simply light hitting that part to my palm, with the screen side down, but i dont hit the screen to my palm, just the lower part of the phone, hit it lightly, boom i get my signal back! but if it doesnt work, just hit it a bit harder, plus hit the top area of the phone, the upper part above the screen, i do it everytime i lose signal, and it always work for me, i bet by hitting it, it trigges something in the radio antenna, so glad to have my XZ's signal back after 2 day of losing signal because of hardware fault. Sat, 23 Aug 2014 19:26:08 GMT https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280266#M31442 Dhicky_Carey 2014-08-23T19:26:08Z https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280267#M31443 <P>I also have the same problem. This is really annoying. Been using a year and it was really great. Now keep &nbsp;me off due to the signal problem. I think one of the cause might be the firmware which Sony has upgraded to. Please solve it ASAP. I really disappointed with this issue. I think before upgrade to latest firmware, the phone works fine!</P> Sat, 07 Feb 2015 14:32:03 GMT https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280267#M31443 Zzzmuimui 2015-02-07T14:32:03Z https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280268#M31444 <P>hahaha amazing... it worked perfectly! haha I guess it is a hardware problem</P> Wed, 10 Feb 2016 21:49:54 GMT https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280268#M31444 Bollotoral 2016-02-10T21:49:54Z https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280269#M31445 <P>Hi, change to 3G it works fine</P><P>Have a nice week end</P> Fri, 15 Apr 2016 11:20:48 GMT https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280269#M31445 jaspita 2016-04-15T11:20:48Z https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280270#M31446 I have same problem..... <SPAN class="lia-unicode-emoji" title=":disappointed_face:"><span class="lia-unicode-emoji" title=":disappointed_face:">😞</span></SPAN> Sun, 17 Apr 2016 09:38:01 GMT https://community.sony.hr/t5/z-series/my-xperia-z-lte-c6603-lost-signal/m-p/3280270#M31446 Ghostikcz 2016-04-17T09:38:01Z