Ques. 1)iBall BTM-72 In-the-ear Headset
2)Samsung BHM1100NBEGINU In-the-ear Headset
which among these is compatible with both NOKIA X2-01 and NOKIA LUMIA 720??
Which among the above is better to buy??
Ans. Out of the above three, go for the nokia BH-108, it is good. It will be compatible with both your phones. Also none of the above three would be able to play music as they do not A2DP bluetooth profile. These headsets are strictly for talking over the phone only.