did u reset network settings?
did u reset network settings?

I also couldn't connect to 4G after update. tried reset network settings also no go. toggling 4G off n on again worked for me. as for wifi, latency has improved though not as low as iOS 7. most importantly no more dropped packets also. yay!
so eventually u got 4g back on?
Not sure if it's just me, but I feel that this update sped up the performance of my iphone 6 which was quite a surprise to me too. Everything just feels super snappy and stable. Finally that "Apple product" feeling is back!
wifi suddenly abit sluggish again. Maybe it's just me but will monitor further.
