问题：线上小程序，部分手机打开后，不限授权弹窗，不能执行任何操作，页面白屏，只显示出静态部分，而且CDN的图片也都加载不出来；从用户日志中看到小程序没有执行任何wx的api。
删除小程序，重新搜索，依然是白屏。
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请问大神们，有遇到过这样的情况吗？
1. 线上小程序基础版最低版本设置为：1.9.9；
2. 代码内使用了，ES7 async await，上传线上代码是没有勾线ES6转ES5
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日志：
1. 出现白屏的日志：
2018-11-30 0:47:56 [log] page pages/position/position onLoad have been invoked
2018-11-30 0:47:56 [log] page pages/position/position onShow have been invoked
2018-11-30 0:47:56 [log] page pages/position/position onReady have been invoked
2018-11-30 0:48:3 [log] page pages/position/position onHide have been invoked
2018-11-30 0:48:3 [log] page pages/resume/resume/resume onLoad have been invoked
2018-11-30 0:48:3 [log] page pages/resume/resume/resume onShow have been invoked
2018-11-30 0:48:3 [log] page pages/resume/resume/resume onReady have been invoked
2018-11-30 0:48:4 [log] page pages/resume/resume/resume onHide have been invoked
2018-11-30 0:48:4 [log] page pages/position/position onShow have been invoked
2018-11-30 0:48:9 [log] page pages/position/position onHide have been invoked
2018-11-30 0:48:9 [log] page pages/mine/mine onLoad have been invoked
2018-11-30 0:48:9 [log] page pages/mine/mine onShow have been invoked
2018-11-30 0:48:9 [log] page pages/mine/mine onReady have been invoked
2018-11-30 0:48:11 [log] page pages/mine/mine onHide have been invoked
2018-11-30 0:48:11 [log] page pages/position/position onShow have been invoked
2018-11-30 0:48:20 [log] page pages/position/position onHide have been invoked
2018-11-30 0:48:28 [log] page pages/position/position onShow have been invoked
2018-11-30 0:48:32 [log] page pages/position/position onHide have been invoked
2018-11-30 0:48:32 [log] page pages/resume/resume/resume onShow have been invoked
2018-11-30 0:48:33 [log] page pages/resume/resume/resume onHide have been invoked
2018-11-30 0:48:33 [log] page pages/mine/mine onShow have been invoked
2018-11-30 0:48:36 [log] page pages/mine/mine onHide have been invoked
2. 正常显示的日志：
2018-12-4 12:20:18 [log] wx.getNetworkType api invoke
2018-12-4 12:20:18 [log] wx.getNetworkType success callback with msg getNetworkType:ok
2018-12-4 12:20:18 [log] wx.getSystemInfo api invoke
2018-12-4 12:20:18 [log] wx.getSystemInfo success callback with msg getSystemInfo:ok
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.setStorageSync api invoke
2018-12-4 12:20:18 [log] wx.setStorageSync return
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.setStorageSync api invoke
2018-12-4 12:20:18 [log] wx.setStorageSync return
2018-12-4 12:20:18 [log] wx.setStorageSync api invoke
2018-12-4 12:20:18 [log] wx.setStorageSync return
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.request api invoke with seq 0
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.request api invoke with seq 0
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.request api invoke with seq 0
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.request api invoke with seq 0
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.request api invoke with seq 0
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.request api invoke with seq 0
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.request api invoke with seq 0
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.request api invoke with seq 0
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.request api invoke with seq 0
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.request api invoke with seq 0
2018-12-4 12:20:18 [log] wx.getStorageSync api invoke
2018-12-4 12:20:18 [log] wx.getStorageSync return
2018-12-4 12:20:18 [log] wx.request api invoke with seq 0
2018-12-4 12:20:18 [log] wx.request api invoke with seq 0
2018-12-4 12:20:18 [log] App onLaunch have been invoked
2018-12-4 12:20:18 [log] App onShow have been invoked
2018-12-4 12:20:18 [log] wx.canIUse api invoke
........
2018-12-4 12:20:41 [log] wx.request api invoke with seq 0
2018-12-4 12:20:43 [log] wx.request api invoke with seq 0
2018-12-4 12:20:43 [log] wx.navigateTo api invoke
2018-12-4 12:20:43 [log] wx.getStorageSync api invoke
2018-12-4 12:20:43 [log] wx.getStorageSync return
2018-12-4 12:20:43 [log] wx.getStorageSync api invoke
2018-12-4 12:20:43 [log] wx.getStorageSync return
2018-12-4 12:20:43 [log] wx.request api invoke with seq 0
2018-12-4 12:20:43 [log] page pages/login/login onLoad have been invoked
2018-12-4 12:20:43 [log] page pages/login/login onShow have been invoked
2018-12-4 12:20:44 [log] page pages/login/login onReady have been invoked
截图：
我的小程序也是基本大多数iphone6的用户都会出现canvas不绘制的情况。其他手机型号，包括iphone的其他型号都没这个问题。虽然说我们这边可以通过其他方式去解决这个问题。但是iphone6的这个独特问题确实让人伤脑筋。
小程序底层也都是webview吧，低版本系统对canvas支持不好，导致不绘制呢。
+1 我们的用户也有部分出现这些问题，而且机型很广泛
不是说某机型所有手机都不行，只是个别。
怀疑是他们手机的问题- -
这些版本都试了，只要之前是出问题的手机，使用开发版一样还是白屏。
提供下appid
问题已解决，非常感谢大家的帮助。 我们使用了ES7 async await，在开发工具中上传代码时没有勾选ES6转ES5选项，就导致了低版本ios系统，小程序SDK报错阻止代码运行，出现白屏的现象。