Question: which phones are otg enabled?
Answer: Acer. ICONIA A1-810, ICONIA Tab A700.
Asus. MeMO Pad 10 ME102, MeMO Pad ME172V, MeMO Pad ME301T, MeMO Pad ME302, MeMO Pad 8 (ME180A) ... 
BlackBerry. Z30, Passport.
Fujitsu. LTE F-01D.
Huawei. ... 
HTC. ... 
InFocus. ... 
Lenovo.