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01Before you start
Mounting a phone on a bike comes down to a tight clamp in the right spot, a phone that's locked rather than balanced, and a backup line in case something lets go. Gather these first and the whole job takes about five minutes.
- The mount and its rubber shims. Most come with two or three thicknesses for different bar sizes.
- The right tool. Usually a small hex key, often included. A multitool works.
- Your phone in the case you'll ride with. Fit the clamp to the cased phone, not the bare one.
- A tether or wrist strap to loop around the bar as a backup.
- A clean, dry rag to wipe the bar so the rubber grips.
Haven't bought a mount yet? Read how to choose a bike phone mount first. Clamps, silicone straps and bag mounts each install a little differently, and the right one depends on your roads.
02Mounting it: the full sequence
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Choose the spot
The stem cap or the bar right beside the stem is best: centered, steady and easy to glance at. Make sure the phone won't cover a light, bell, e-bike display or your brake and shifter levers.
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Fit the shim
Wipe the bar, then wrap the shim that makes the clamp close snugly with room to tighten. Too thin and it slips; too thick and the bolt won't bite.
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Clamp and tighten
Close the clamp and tighten the bolt evenly. On carbon bars or stems, go gently and stop as soon as it holds; overtightening can crack carbon. Follow any torque value printed on your bar or stem.
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Set the angle
Sit on the bike in your normal riding position. Tilt the holder so the screen faces your eyes, then lock the swivel or rotation joint.
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Lock the phone in
Open the arms or quick-lock, seat the phone fully, and close it until every corner is gripped. Make sure the clamp doesn't press the side buttons; on iPhones that can trigger the Action button or Camera Control.
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Attach the tether
Clip a lanyard to your case (or a lanyard tab under the case) and loop the other end around the stem or bar. Keep it short enough that a dropped phone can't reach the front wheel.
Grab the mount and try to rotate it around the bar. If it moves, it will move further on the first pothole. Add a thicker shim or tighten another quarter turn.
03If your mount isn't a clamp
Silicone strap holders
Stretch the base strap around the bar and hook it over the tab, then stretch the four corners over the phone. Check that no strap crosses the side buttons or the camera. Silicone loosens with sun and age, so replace it when the phone starts to twist.
Bag and top tube mounts
Tighten the Velcro straps around the bar or top tube and the head tube so the bag can't swing into your knees. Slide the phone in with the screen facing the window and test that touch registers before you ride. Close the zip fully; a gap lets rain wick in.
Quick-lock adapters
Some systems add a small adapter to your case. Stick it dead center, press firmly for 30 seconds and let the adhesive cure for the time on the instructions before riding.
04The two-minute test ride
Do this in a parking lot or a quiet street, not on the way to work. You're checking for slips, rattles and button presses before you rely on the phone for directions.
05Phone settings worth changing for the ride
A mounted phone that keeps going dark is useless for navigation. Two settings fix most of it:
- Keep the screen on. iPhone: Settings > Display & Brightness > Auto-Lock. Galaxy: Settings > Display > Screen timeout. Navigation apps usually keep the screen awake on their own while a route is active.
- Watch the battery. GPS plus a bright screen drains fast. Turn on Low Power Mode or Power saving for long rides, or carry a small power bank.
- Silence distractions. A Focus mode or Do Not Disturb stops notifications from covering your map.
Riding on rough trails a lot? Hard, constant vibration can be tough on phone cameras. Apple's warning is aimed at motorcycle engines, but if you also ride a moped or motorbike, read phone camera shaking on a motorcycle.
06Backup tethers and mounts
A navigation clamp, a touch-screen waterproof holder for wet commutes, a lanyard clip that sits under your case, and a short wrist strap to loop around the bar.
Choosing between a bar and a stem position? See handlebar vs stem bike phone mount.
Questions people ask
How tight should a bike phone mount be?
Tight enough that you can't rotate it around the bar by hand. On carbon parts, stop there and follow the torque printed on the bar or stem; overtightening can crack carbon. A thicker shim is better than cranking the bolt.
Can I mount my phone on a bike without a mount?
Rubber bands or tape work for a short ride, but they don't hold on bumps and can press buttons. A cheap silicone holder is safer, and a top tube bag with a window is another no-clamp option.
Should I keep my phone case on when mounting it?
Yes. Fit the mount to the phone in its case. The case protects the phone if it slips, and many clamps grip a case better than bare glass and metal.
Is it safe to use my phone for navigation on a bike?
Set the route before you ride and use voice directions so you only glance at the screen. Many places restrict handling a phone while riding, so avoid tapping it while moving.