First rule of computer problem-solving: don't use the phrase "it doesn't work". It's not helpful. Instead: What do you expect to happen? What happens instead? Can you give screenshots? Here's what I'd do to debug: - Connect an iPhone to a Mac. Open Safari on the Mac. Make sure the Develop menu is enabled. - From the Develop menu, select "iPhone" (or whatever the phone is called) and the title of your page in the subsequent menu. - The developer console will open for that window on your phone. - Press Option-Shift-R Command-Option-R to reload the page. - Make sure "Console" and "All" are selected, so you can see any errors that your page is outputting. When I do this, I see the following errors: - jQuery.Deferred exception: undefined is not an object (evaluating 'screenfull.raw.fullscreenchange') - _createButton — Control.FullScreen.js:80 - TypeError: undefined is not an object (evaluating 'screenfull.raw.fullscreenchange') So you've got a problem with the code in Control.FullScreen.js, i.e. the Leaflet full-screen control that you're using. There appear to be some reported issues with it on the iPhone: see https://github.com/Leaflet/Leaflet.fullscreen/issues . Try removing this plugin and trying again. This is basic JavaScript debugging, not specific to OSM. If your developer doesn't know how to do this you should possibly get a new developer.

First rule of computer problem-solving: don't use the phrase "it doesn't work". It's not helpful. Instead: What do you expect to happen? What happens instead? Can you give screenshots? Here's what I'd do to debug: - Connect an iPhone to a Mac. Open Safari on the Mac. Make sure the Develop menu is enabled. - From the Develop menu, select "iPhone" (or whatever the phone is called) and the title of your page in the subsequent menu. - The developer console will open for that window on your phone. - Press Option-Shift-R to reload the page. - Make sure "Console" and "All" are selected, so you can see any errors that your page is outputting. When I do this, I see the following errors: - jQuery.Deferred exception: undefined is not an object (evaluating 'screenfull.raw.fullscreenchange') - _createButton — Control.FullScreen.js:80 - TypeError: undefined is not an object (evaluating 'screenfull.raw.fullscreenchange') So you've got a problem with the code in Control.FullScreen.js, i.e. the Leaflet full-screen control that you're using. There appear to be some reported issues with it on the iPhone: see https://github.com/Leaflet/Leaflet.fullscreen/issues . Try removing this plugin and trying again. This is basic JavaScript debugging, not specific to OSM. If your developer doesn't know how to do this you should possibly get a new developer.

First rule of computer problem-solving: don't use the phrase "it doesn't work". It's not helpful. Instead: What do you expect to happen? What happens instead? Can you give screenshots? Here's what I'd do to debug: - Connect an iPhone to a Mac. Open Safari on the Mac. Make sure the Develop menu is enabled. - From the Develop menu, select "iPhone" (or whatever the phone is called) and the title of your page in the subsequent menu. - The developer console will open for that window on your phone. - Press Option-Shift-R to reload the page. - Make sure "Console" and "All" are selected, so you can see any errors that your page is outputting. When I do this, I see the following errors: - jQuery.Deferred exception: undefined is not an object (evaluating 'screenfull.raw.fullscreenchange') - _createButton — Control.FullScreen.js:80 - TypeError: undefined is not an object (evaluating 'screenfull.raw.fullscreenchange') So you've got a problem with the code in Control.FullScreen.js, i.e. the Leaflet control that you're using. There appear to be some reported issues with it on the iPhone: see https://github.com/Leaflet/Leaflet.fullscreen/issues . Try removing this plugin and trying again. This is basic JavaScript debugging, not specific to OSM. If your developer doesn't know how to do this you should possibly get a new developer.