Same problem on my device. (Oneplus 3 running OOS 4.0.2)



Whenever I go out of range of a wifi access point, or leave data to join a wifi network, 75% of the time my device will crash and freeze, and perform a reboot.

Sometimes, it freezes and I have to longpress power button in order to shutdown.

Other times I notice it rebooted by itself by having to enter my pincode in order to unlock the phone.



This has been going on since the 4.0.0 update, 4.0.1 and 4.0.2.



Basically makes the phone unusable because whenever wifi is left on, it starts connecting to open networks causing this bug to happen over and over again.



Another friend of me is having the same issues, I suspect it has something to do with the handover between wifi and data. Seeing as this problem is not widely reported, I think it is related to Belgian/European data bands. (Looking at the username of the username above, and my friend also located in Belgium)



Please Oneplus, investigate this asap. Don't hesitate to contact me for further info, this needs a fix, yesterday.

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