Default (Help needed) Mobile signals and no service

Hello all. I got my Xperia z on Saturday 28th and I got home from school yesterday and found I had no service nor barly any service. If I put my sim into my brother's phone it works perfect. And also I have checked the imei and it's not blocked

Help. I don't to waste nearly 300

I do not accept donations. I want people to use their money on food and liquids!!!!

JustPlayingHard (Me!)
pranavaryans (CoLeader)
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