Bone Bike Tie 4

The Bone Bike Tie 4 is the honest pick for the casual Dutch cyclist. You ride from home to the station, you occasionally need Google Maps for an unfamiliar address, and you do not want to spend 100 euro on a system with a mandatory case. This universal silicone mount does exactly that: wrap the strap around the bar, drop in the phone, and four silicone hooks clamp around the corners. Done. Any phone fits, any case fits, no accessories, no ecosystem, no fuss. It works surprisingly well within the limits of what it is meant for. For relaxed city traffic in Amsterdam or Utrecht, a ride on the city bike from home to the park or to the train, the Bone is more than enough. At 40 grams it is one of the lightest solutions on the market and it fits handlebar diameters from 20 to 36 mm, so it works on almost every city bike, omafiets, folding bike and e-bike.

But be honest about the limits. First: silicone stretches. After six months to a year of heavy use — especially across the swings of Dutch seasons with frost, rain and heat — the strap sits less tight than it did on day one. That is not a manufacturing fault, that is the material. You can usually keep using it, but it demands a second check before every ride. Second, and more important: there is zero vibration damping. Apple explicitly warns that high-frequency vibrations from bike mounts can permanently damage iPhone optical image stabilisation (OIS) and autofocus sensors. For a ten-minute ride on smooth tarmac that is not a big deal. For daily half-hour rides across Amsterdam cobbles, canal street setts or Rotterdam tram rails you are taking a real risk — especially with an expensive iPhone Pro. Compared with Quad Lock and SP Connect, the Bone is a different category: cheaper, more universal, but without the safety margin for your camera. Compared with having nothing on the bar — no-go the moment you actually ride with a map.

Choose this mount deliberately: for short casual city rides with a phone that has no Pro camera, this is a perfectly fine and budget-friendly option. For daily heavy use with a premium iPhone, a system with vibration damping is smarter.