Was it used to work earlier ?
I have used iphones / lr since the iphone is on the market. never had any connection issues.
I have not used this particular combination, because I just upgraded the phone to ios9.2 so it could be either a LR or a IOS issue. I don't know.
Ok False alarm. I restored the iphone, rebooted everything and now it seems to work fine with LR.
Glad that its working