[mfalcantara]

I bought my Samsung galaxy note 4 last November 2014. my problem is, last September my note 4 restart's even if am not using it. i ran to the store where i bought my device and they advice me to restore my phone using the restore factory setting. i followed that advice but it didn't work so i went back to the store. they forwarded my unit to their service center. the worst thing is that they updated me and notify me that my unit is rooted and my warranty is void already. they were asking 16,000php for the repair. i'am worried because my unit is not rooted, not even touch by any unauthorized technician. please help..... what should i do?