Hi, First time in Sony site, sorry if i make mistake I have also same problem! Bought Z5 Dual in Dubai, using in Central Asia. Phone is perfect for me, I am a die hard Sony fan. Using Sony devices and mobiles last 10+ years. I have ADSL connection at home through linksys wag120N. Wifi of other phones including wifes Z1 works perfectly but not on my Z5 dual. First 2 month couldnt connect at all, no wifi logo/sign. It just says that connecting/obtaining IP for fraction of second then it saves, thats all. 3 days ago it connect magicly for 15-20 seconds and it dropped. i have tried everything like different channels on router, airplane mode thing, dhcp and so on. Thought maybe router and z5 had connection issue but in the end tried TP-link wifi adapter (SOFTAP). Same applies here, Z1 connecting perfectly to Softap, Z5 connects, internet is working but after 10-15 seconds dropping despite wifi sign/logo is still there. I have to forget and reconnect and it will disconnect one more time in 10-15 seconds. It is unbelievably annoying, dont know what to do. And as i said as i bought it from Dubai i do not have chance to change it despite all guarantee documents are available. I really hope you have some abra-cadabra thing to fix it P.S. Not using any Stamina mode! Thanks.
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