# Access iphone's settings app on real device

**URL:** <https://discuss.appium.io/t/access-iphones-settings-app-on-real-device/10624>\
**Category:** Support\
**Created:** [June 8, 2016, 7:32pm UTC](https://discuss.appium.io/t/access-iphones-settings-app-on-real-device/10624 "2016-06-08T19:32:55Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sandesh](https://discuss.appium.io/letter_avatar_proxy/v4/letter/s/d6d6ee/32.png) [@sandesh](https://discuss.appium.io/u/sandesh)\
**Post date:** [June 8, 2016, 7:32pm UTC](https://discuss.appium.io/t/access-iphones-settings-app-on-real-device/10624/1 "2016-06-08T19:32:55Z")

</div>

I want to access device settings, I checked there are similar posts but no answer for real device.

I tried passing parameters as

`desired_caps['app'] = 'settings'` and `desired_caps['bundleId'] = 'com.apple.Preferences'`

But I get error `Instruments Trace Error : Target failed to run: Permission to debug com.apple.Preferences was denied. The app must be signed with a development identity (e.g. iOS Developer).`

Seems like above works on simulator but not device.

I can launch my test app, so I’m passing other parameters correctly.

Or is there any other way to access device settings?