Fits perfectly with Giant Mountain Bike and any phone of the iphone type, upto the larger Samsung Galaxy models 4.8 inch screens easily. Maybe not with Galaxy Tab size phones but I cant say for sure.
Easy to fit, no screws or tools needed. Has a built in screw which you loosen to open the bracket wide enough
to wrap onto the handlebar then screw tight to secure in place. I have been on some very rough tracks and forest courses
since fitting and the item itself has not come loose or moved position in any way on the handlebars and the housing
bit which you put your phone in has been completely faultless, kept my phone in place perfectly and securely.
cant rate highly enough