Holder for securely attaching a smartphone to the handlebars of a bicycle or eBike. Adapts easily: simple and individual adjustment to the device through a movable clamp. Optimal alignment: the device can be rotated 360° thanks to the ball joint and is adjustable in tilt angle, perfect for portrait or landscape orientation. Easy mounting on the handlebar thanks to the individually adjustable rubber band. Suitable for any smartphone with or without a case or protective cover. The bike phone holder is compatible with smartphones with a width of 5 – 9 cm. The holder can be mounted on handlebars with a maximum diameter of 3 cm. Simple locking by sliding the clamp together, and the fixation can be released with a push of a button. In addition to the clamp, elastic bands ensure a secure hold of the smartphone. Rubberized contact surfaces protect against shocks and scratches on the smartphone. Full access to all buttons and ports of the phones, allowing the device to be operated without removing it from the holder, for example, using Face ID or fingerprint sensor.