Battery Drain

[f_a]

My phone dies really quickly and when I take a picture the phone dies after afew minutes even if it's on 100%, when I put it on again it will be on a reduced percentage and drain very quickly sometimes even say 0% and shut down when the phone is on a higher percent, as high as 90%. I performed a software repair using Xperia companion and the problem is still persisting 

[f_a]

Thanks for all the help:-) Do you think it's worth me changing the battery and can you give me an estimation of how much it would cost?

[Uliwooly]

@f_a

The Xperia Z3 its one of my favorite Xperias, I think it's worth it, as for pricing, you will have to contact your Local support regarding pricing, if that was my Z3 I would buy

a new battery

double sided seals for the front and back pannel 

if the port covers are a bit loose, you might want to buy them too

either on amazon, ebay, etc.