如题，最近经常有用户反馈黑屏、白屏。请帮忙看下是哪里问题！

从微信后台当下来日志，发现日志里并没有首页接口（如：wx.request success callback）的调用日志。

只能看到用户频繁的切换tab的日志（onShow ，onHide ），日志明细片段见下。

用户手机系统：iOS 12.1.2 ，设备型号：iPhone 6<iPhone7,2>

附日志片段：

2019-8-29 9:44:40 [log] page pages/index/index onLoad have been invoked

2019-8-29 9:44:40 [log] page pages/index/index onShow have been invoked

2019-8-29 9:44:41 [log] page pages/index/index onReady have been invoked

2019-8-29 9:45:2 [log] page pages/index/index onHide have been invoked

2019-8-29 9:45:5 [log] page pages/index/index onShow have been invoked

2019-8-29 9:45:7 [log] page pages/index/index onHide have been invoked

2019-8-29 9:45:8 [log] page pages/index/index onShow have been invoked

2019-8-29 9:45:12 [log] page pages/index/index onHide have been invoked

2019-8-29 9:45:13 [log] page pages/index/index onShow have been invoked

2019-8-29 9:45:18 [log] page pages/index/index onHide have been invoked

2019-8-29 9:45:55 [log] page pages/index/index onShow have been invoked

2019-8-29 9:46:4 [log] page pages/index/index onHide have been invoked

2019-8-29 9:46:6 [log] page pages/index/index onShow have been invoked

2019-8-29 9:46:18 [log] page pages/index/index onHide have been invoked

2019-8-29 9:46:30 [log] page pages/index/index onShow have been invoked

2019-8-29 9:46:34 [log] page pages/index/index onHide have been invoked

2019-8-29 9:51:41 [log] page pages/index/index onShow have been invoked

2019-8-29 9:51:46 [log] page pages/index/index onHide have been invoked