Mobile phone preferring n over ac?

[MrAkai]

My android phone (oneplus one) supports 802.11ac.

However, when I connect to the A+ it consistently connects at 64Mbps.  I have not found an easy way in Android to tell if you're N or AC, so it could be 65Mbps AC I suppose.

Occasionally, however, it will connect at 300-500Mbps.

I haven't found a way to consistently reproduce this and am perfectly willing to bet it's a Oneplus problem (although their stuff is pretty standard android CM11).

Is there a way to tell on the router GUI (or even SSH) which protocol an individual client is using to connect?

Is there any way to prioritize AC over N from the A+ side?

Thanks!

[LGNilsson]

Sadly Wi-Fi isn't smart enough to do this and the only way to always default to the 5GHz band is to only connect the phone to it.
You should connect at 433Mbps or so depending on signal strength.

[MrAkai]

I have separate SSIDs so I know I'm on 5Ghz, but it's either 65Mbs (often)  or ~390Mbs (rarely).

Is there a way to set the 5Ghz to AC only and not N or is N included/required in AC?

Thanks
-S

[LGNilsson]

Right, that might be device specific in your case as whenever I connect with my HTC One M8 I always connect at AC speeds.
There's no option to force AC only in the router as of right now, but I guess that might be something we can add.