Agar kisi dost ka mobile acha lag jae or usko tumhara mobile pasand ajae to kya apas ma mobile badal sakte hai?
بسم الله الرحمن الرحيم
(Fatwa: 1067/1068/M=1432)
You can exchange it by mutual consent.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband