Data lost when using ionic/storage

[mikeon]

Hey, I guess it is because internal browser storage could be cleared after app is closed or after some cleaning.
If you want to preserve your data use sqlite. Here is more information:

IOS - Lost all storage when close app

I build mobile website and embed to ionic via iframe. But In IOS version, when i closed app, HTML5 local storage are gone. I test on safari is still ok. I’ve spent the whole 2 days solving this and still cannot done. Could someone help me please.