# 64bit build for ios

**URL:** <https://forum.ionicframework.com/t/64bit-build-for-ios/69846>\
**Category:** ionic-v1\
**Created:** [November 10, 2016, 10:36pm UTC](https://forum.ionicframework.com/t/64bit-build-for-ios/69846 "2016-11-10T22:36:36Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![fj33xx](https://avatars.discourse-cdn.com/v4/letter/f/a87d85/32.png) [@fj33xx](https://forum.ionicframework.com/u/fj33xx)\
**Post date:** [November 10, 2016, 10:36pm UTC](https://forum.ionicframework.com/t/64bit-build-for-ios/69846/1 "2016-11-10T22:36:36Z")

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I encountered a message while opening a built ios app on my phone:

‘xxx’ may slow down your iphone. the developer of this app needs to update it to improve its compatibility.

It seems to be the issue of lacking 64bit support. But can’t find a solution online.  
Does anyone have this issue too?

Thanks a lot.

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<div class="post-metadata">

**Author:** ![sebzzz](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/sebzzz/32/104424_2.png) [@sebzzz](https://forum.ionicframework.com/u/sebzzz)\
**Post date:** [November 11, 2016, 6:12pm UTC](https://forum.ionicframework.com/t/64bit-build-for-ios/69846/2 "2016-11-11T18:12:08Z")

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@fj33xx I’m having this issue as well as of this morning, after updating @ionic/app-scripts to 0.0.42.

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**Author:** ![laslorma](https://avatars.discourse-cdn.com/v4/letter/l/ba8739/32.png) [@laslorma](https://forum.ionicframework.com/u/laslorma)\
**Post date:** [November 16, 2016, 11:57pm UTC](https://forum.ionicframework.com/t/64bit-build-for-ios/69846/3 "2016-11-16T23:57:10Z")

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same here!!! did you find how to set the x86\_64 architecture?

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**Author:** ![Drivenes](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/drivenes/32/103133_2.png) [@Drivenes](https://forum.ionicframework.com/u/Drivenes)\
**Post date:** [November 26, 2016, 6:43pm UTC](https://forum.ionicframework.com/t/64bit-build-for-ios/69846/4 "2016-11-26T18:43:45Z")

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+1 I’m also having this issue

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**Author:** ![123dylan321](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/123dylan321/32/104400_2.png) [@123dylan321](https://forum.ionicframework.com/u/123dylan321)\
**Post date:** [December 1, 2016, 9:26am UTC](https://forum.ionicframework.com/t/64bit-build-for-ios/69846/5 "2016-12-01T09:26:58Z")

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Any resolution guys?

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**Author:** ![SpicedNuts](https://avatars.discourse-cdn.com/v4/letter/s/9de053/32.png) [@SpicedNuts](https://forum.ionicframework.com/u/SpicedNuts)\
**Post date:** [December 21, 2016, 6:14am UTC](https://forum.ionicframework.com/t/64bit-build-for-ios/69846/6 "2016-12-21T06:14:27Z")

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I’m having the same issue. Any resolution after 1 month?

Cordova CLI: 6.4.0  
Ionic Framework Version: 2.0.0-rc.4  
Ionic CLI Version: 2.1.17  
Ionic App Lib Version: 2.1.7  
Ionic App Scripts Version: 0.0.47  
ios-deploy version: Not installed  
ios-sim version: Not installed  
OS: Windows 7  
Node Version: v6.7.0  
Xcode version: Not installed

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<div class="post-metadata">

**Author:** ![nickscheynen](https://avatars.discourse-cdn.com/v4/letter/n/5daacb/32.png) [@nickscheynen](https://forum.ionicframework.com/u/nickscheynen)\
**Post date:** [December 21, 2016, 9:21am UTC](https://forum.ionicframework.com/t/64bit-build-for-ios/69846/7 "2016-12-21T09:21:18Z")

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Just solved this issue myself using: [Performance alert when deploying to iOS 10.1](https://forum.ionicframework.com/t/performance-alert-when-deploying-to-ios-10-1/69049/3)

I ran `ionic platform update ios` and in package.json changed the ios version inside cordovaPlatforms to 4.3.0:

```
"cordovaPlatforms": [
    "ios",
    {
      "platform": "ios",
      "version": "4.3.0",
      "locator": "ios"
    }
  ],
```