Xperia Z C6603 Network Problems

[teosSony1]

So I bought a refurbished Xperia Z (Android 4.4.4 KitKat) a couple of days ago. I put my 4G sim card in and i saw only the "E" sign on top. I have tried everything i have read in this forum, but i can't update my Xperia Z via PCC, or via the phone itself, or repair the problem using anything else. Please help, this is driving me crazy. (And sorry for any spelling mistakes, english is not my native language)

[Uliwooly]

@teosSony

I've seen this before, things to check

1 if your phone its compatible with your carrier's 4G LTE bands

2 Sometimes your carrier must enabled 4G on your account and/or add the IMEI of your phone

3 if the SIM card its old you might need to get a new MICRO SIM card

4 make sure that you have the correct APN settings

[teosSony1]

The problem is I only get 2G network and also I can't update to 5.1. There is something else I forgot to mention. When I switch to wcdma only I get no signal at all. I can't even make calls. I am concerned about the phone having software problems and missing antenna also.

[Uliwooly]

@teosSony

Did you checked this with your carrier for any 2G issues? also, do you have the correct APN settings?

[teosSony1]

My carrier supports up to 4G but my phone only operates in 2G. I changed carrier today and the same problem persists. I also found out that I don't have a pressure sensor in my phone, so probably I won't have the antenna either. Also, the phone won't update to 5.0 in any way.

[Hampus]

Hi,

I'm not sure if you have tried to perform a software repair using PC Companion via PC Companion? If not, could you give it a go to see if this can help?

[teosSony1]

Probably a dumb question but how do u repair the software? I only have the update option, but It doesn't update to Lollipop.

[Hampus]

In PC Companion you press start on Support Zone > Start on Update the phone/tablet software > Repair phone/tablet (the blue clickable link in the message) > Follow these steps without having your device connected to the PC.

Follow the instruction that appears in the program and do not connect your device until this guide tells you how to connect it. You can find step by step guide (with pictures) here:
http://talk.sonymobile.com/t5/FAQ/How-to-perform-a-software-repair/m-p/1061294

[teosSony1]

Apparently, i could not repair the phone either. Pc Companion said there was no software for my phone. I am really getting tired of this thing. Do you guys know any other way to install software on my phone ?

[Hampus]

Could you send me your IMEI-number via PM and I can look closer into it:
http://support.sonymobile.com/global-en/xperiaz/userguide/IMEI-number/