Xiaomi Redmi 4X – Notes

I recently bought a Xiaomi Redmi 4X to replace my very-old-friend (Samsung S4).
The MIUI interface is quite nice and convenient, and the phone worths the value (less that 130€, including logistic fees)

Couple of notes:
– Engineering Mode: *#*#4636#*#*
– Fix VoLTE issue: Here
– Tweak ROM: Here

Next steps:
– Root
– Install custom Rom (Lineage ?)