Weak signal after changing to Z3

Hi there,
I noticed my signal at the SIM slot 2 is weak after changing to this Z3. My previous phone was fine.
Can you advise if there are any settings I can do do?
Thank you,
Macrox
Solved!
Go to Solution.

You should try contacting Sony Xperia Support.
http://support.sonymobile.com/global-en/contactUs/

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