Lost ALL my Health data after 8.4 (no reset!) and now keeps deleting everything I put in.
As I wrote in the topic section yesterday I saw that I lost all my Health data.
This is not the first time, but in the past I made full update-and-reset-than-put-the-data-back.. so that was my fault because iTunes doesn't make backups of the Health data if they are not encrypted. I knew it.
This time I updated my iPhone via incremental update using only the phone. No iTunes, no hard resets, etc. Only 170Mb of small update in the phone without erasing data. I thought that in this way I should have had no issues. But all the data is lost .. All of them. And most important now nothing works. The Apps doesn't write any data, and if I want to write something, as I go out from the App and I open back, all I have set is gone. Example: I set that I am a male and my birthdate. I close the Health App, open back and all is set to 0 and gone. Maybe the other apps cannot write data because they write and the data is not kept in and erased as the data I put manually in. I don't know.
Maybe I'll try to reset the phone and put the data back (call it "irony of the fate"..). But I have tried to write here because maybe someone of you knows the issue. If not, well, now you know that you can lose data, so make an encrypted backup and stay safe ...
Thank you
iPhone 5, iOS 8.4, White, 64Gb