iPhone 6s resetting Apps
Hi, I writing here as a last resort because honestly I have no more ideas on what to do to solve this issue, and it's hard to explain at a Apple store.
I'm using a brand new iPhone 6s with iOS 9.3.2, its the first time I have this issue, after owning several previous models.
Ever since I got this new iPhone, some of the apps just reset they "inner" memory, like they loose the UserDefaults. I notice it specially in apps like WhatsApp, Telegram or Facebook messenger. Out of the blue this apps just forget who I am and ask for my number/confirmation again (Facebook messenger asks for Login again).
It happens several times a day, for instance using WhatsApp, I can be chatting with someone, block the phone and leave it for 1 minute, when I come back, WhatsApp reset and goes to intro screen, asking for my number, name and chat recovery. Same thing happens with Telegram, and several other apps.
At first I though it could be a WhatsApp problem, but I deleted my account, created a new one. Didn't solve the problem. After that I tried Messenger and Telegram, same thing happens.
I also tried to completely reset the phone, install everything again, didn't work.
Everyday I'm running into this issue, which is a pain because the apps go offline and I don't notice, people can't reach me. If I go to the Apple store, I cant show this behaviour happening because its totally random, might happen 10 times a day, or none...
Any ideas? thanks
iPhone 6s, iOS 9.3.2, 64GB