Wireless ear buds won't stay connected only to my iphone 6s

I'll check that in the instructions for the earbuds to see if I'm missing something , I have done a simple reset with the buds . The weird thing is though , they will connect with anything else instantly when prompted and work great , even with other devices in the same room , including my phone . I have shut the Bluetooth off on other devices with only my phone turned on to accept them , it doesn't seem to make a difference.

Ok , just an update on my bluetooth connectivity issue , I've tried holding the iphone really close to my wireless earbuds and it stays connected . It appears to be an iphone signal strength issue because my connection with other devices in my home also cuts out and reconnects . I have a remote "UE Roll" brand speaker , stereo bluetooth adapter for my sound system that also cuts out and disconnects every time I move the phone away more than about 6 to 12 inches away . In my car the phone sits in a holder about 6 inches from my car stereo , so in this case it stays connected . As mentioned in an earlier post the earbuds work fine from other sources like ipad , my wife's iphone etc. other devices in my home that work with bluetooth also work fine the ipad and wife's phone , so it's definitely my phone that has the problem.

So I ended up bringing my bluetooth devices with me to the apple tech and they tested everything . They deemed that it was a faulty bluetooth in my phone . I picked up a replacement the next day . Everything is now working great !

Hopefully I'll know more soon , I'm waiting for an answer from the apple tech . They did a diagnostic on the phone yesterday and so far haven't found anything.