I mountain bike 4-6 days a week in Philadelphia in Wissahickon and Belmont parks. After about 6 months now the case is still working and I trust it, though it is far from perfect.
I look at this case like my helmet; it will protect from the basic smacks of branches and such, but it will probably only last one catastrophic crash, and with any luck it will protect the phone when it does. Fortunately, though I have a number of falls, nothing has come close to a full impact of the case.
I did not trust the lid clasp from the beginning. Initially I used a back-up rubber band but now i use a tie-tie and keep it cinched snug, but not too tight. I use the same one time after time and store it around my bell when I take the phone out. I don't ride much in the rain but sweat or my hydration system does get on it and so far no moisture has penetrated the case. If there were a real downpour though I have a back up plastic sandwich bag I can through over it.
I wish the case was sturdier and had a flip down clear plastic cover to go over the current 'touch-through' cover. AS it is the screen will probably break if it ever contacted a rock at speed, so having another added cover that you can still see through would be ideal.You'd just flip it up to the current cover to use the touch screen.
Many of my friends ask why I'd have the phone on the bar. I like it there is all. It's not like I have to make phone calls when riding, (though it's convenient to pull it out if I do). But I like having the phone to check everything from weather to texting a lost buddy on trail. (texting is a bit cumbersome through the extra screen, but does work). I'd never get to the phone if it was in my pack. But I also use an app called GPS Tracker that simply sends out a live GPS signal so when I'm out on my own late at night my people can track me live and make sure I'm still on the move. I can't wait until the iphone can multi task though as there are number of interesting bike apps I'd like to be running concurrently.
The video works fantastic on the flat, but as soon as you hit the trails it vibrates too much. I still have some great video and people find it impressive, but nothing like a specialized system. Perhaps the mount could float somehow in a future version which would make the video more useful for mountain biking. I do have some examples though if you are interested. Also, audio recording is horrendous; the case just creaks loud the whole time (you only hear it on playback). I'm sure an external mic would fix this. For a road rider though the video is great. And I love having the camera accessible. I personally like the handlebar mount view over that of a helmet mount.
Recently I caught an amazing video of a tree falling naturally in the Wiss and that was mainly due to the phone being available right there in the case, (even though I didn't shoot it from the case.)
I've seen this same mount clasp on other devices and it prone to failure. Over time I can't tighten it without it slipping. Now I use a big rubber gasket over the bar to keep it steady, but I can no longer get the connection tight enough and it will slip down after a few logs or bumps. I can live with it though; the phone will not fall off the bike as along as it is slide all the way in past the click.
So improvements would be an extra sturdier clear cover over the screen. A better clasp for the lid and for the mount, and a less vibrating or perhaps floating mount so as to capture smoother video.
If someone knows a way I could hook up the biologic USB charger to a wheel without a special dynamo charger please let me know. I can see that coming in handy for day trips. It would be I guess a dynamo that can powered from contact with the the tire.
Lastly, if you want to make calls I recommend a bluetooth headset. I've used one in a pinch and can easily call without taking the phone out of the case. I've answer calls through the case but have to be dead stopped and on speaker to hear them. My people know to call me multiple times if there is an emergency cause otherwise I let most calls go to voicemail.
4 stars mainly because though it's not perfect but has lasted through a lot of rough miles.Get more detail about
Biologic Bike Mount for Iphone.
