Six people – A, B, P, Q, X and Y each uses a phone of different brand – Intex, Honor, Xiaomi, Nokia, Oppo and Vivo but not necessarily in the same order. All of them were related to each other in some way such that there were only two married couples in the family.

One who uses Oppo is the grandfather of Y, who uses Intex. Q, who uses Honor is married to A. P, who uses Nokia is married to the one who uses Xiaomi. B is the mother of X and Y.