Ok, so i have used amber for 3 days, faster, battery life seems to be improved, pro cam is awesome. I have not seen any issue until now I'm using an att unlocked in telcel carrier in Mexico. LTE is working as well the logo says 4g and tested speed with up to 20 Mb.
Double tap to wake is great.
Something I did not like is that restoring my backup takes forever and some,apps hunged up and had to cancel them but,this nothing to do with amber,but the quantity of apps I had.
Like the option to set the pro cam as default camera app.
I have not tried radio
Tethering works perfect.
Sent from my RM-821_eu_france_267 using Board Express