im using this case
http://www.lazada.com.my/ipaky-slim-tpupc-...d-12359819.html

im prefer spigen too, but what to do since they didnt make it for RN3.
this case quite ok la, but hate the thin plastic
so far ok for protection, cover most of the parts include edge bump for screen protection.

same here. i click the update button then went sleep.
nextday wake up see phone already MIUI8

i on MIUI 8.0.1.0 global room, 32GB, SD unit for few weeks, previously on MIUI7, update using OTA
notice few issue with it
- sometimes when on call, after talking, screen didnt turn back on, press back button, nothing, press power button then press again, it show lock screen, once unlocked, back to dark screen. i press and hold power button to reboot to solve this.
- some apps sometimes auto-log out themself, eg dropbox, pebble etc. i need to login again to use it.

been using it since july16.
i got monitor the temp using an apps, the highest temp is when i using waze n charging at the same time on noon, phone on dashboard, temp reach 50c.
if normal usage, around 30-35c.

i got same issue as u.
im on miui8.0.1.0 global
both smart cover n prevent pocket dial also disabled.

u can check which apps using that much data.
security > click data icon > data usage stats.

for spotify, could be u set auto-download the music data instead of streming it. u can set download using wifi only.

chine got release the RN4 already, so by right should hv price cut

but here, stock always not enough, how to do price cut

open the folder > click the folder name > below got icon for u to disabled the promo apps

u can use any usb charger that rated 2A
when charging, it should received with rated between 1.8-1.9A, depend on ur battery %.

i bought this phone because of SD650 and cheap
if i upgrade to rn4, seem like a downgrade to me since its MTK, got lots of issue for precious chips.

also check if u allow autorestart for that apps

same here. i also cant use it even on 4G. but i notice some quota reduce abit even i didnt open youtube.

i set it as enable on the settings > sync > wifi-only
so far didnt effect gmail.

anyway, can u check the data usage stats, which app that use lots of quota ?
security > data usage > data usage stats

i put on/off button for gps. so can save from battery drain
only turn it on when use waze etc

settings > installed apps
then find Documents n enabled it ( should be in bottom if disabled)
try again

btw this Documents will disabled once reboot. so u need enable it again if it asking it again