If you are having trouble connecting to Wifi or BT or GPS and you have Tasker, the app is probably causing the issue. Tasker, even with no profiles active, still does WiFi Scan & BT scans and will shut both off if nothing is found within the specified limit. Unfortuntely, the default setting its 120 seconds. For me, it takes me a bit to type a long key in for WiFi for the first time and I finally realized why WiFi would just shut off in the middle of obtaining an IP (therefore erasing the password). The same thing goes for BT & GPS, default settings are 120. Its fine, in my opinion, for GPS but scanning for a BT may take a bit longer. Anyways, this wasn't common knowledge for me and I hope it helps!