I've searched here to find my exact problem.. but can't find anything exactly like it..
My signal goes completely away every couple of seconds I've seen others say that they've had a similar issue but they mention they still have the 4g symbol ect.... Mine however disappears I get a notification saying "attention no service" it does this all day long.. I've only had this phone about 2 weeks bought it used.. but the first week worked flawlessly... I search for updates but can't find any.. but I'm pretty sure my version is old it's b03... It clearly says under the version that my phone's never been updated.. but when I search for updates it says my version is up to date any help will be greatly appreciated