[Q] Issue with SGS3 I9300 - which ROM?

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http://forum.xda-developers.com – Hello everyone, my cousing bought a chinese I9300 but he wanted to change ROM because the current one doesn't work well and he has lots of problems with the signal, sms, wifi... We're from Italy if that matters. Below you can see the screenshots captured from an Antutu report so you can see what's inside this baby :good: I'd like to know if there's any ROM I can install to replace the running one and see if it can work better. Thank you all in advance Attachment 2286074 Attachment 2286075 Attachment 2286076 Attachment 2286077 Attached Thumbnails (HowTos)