Happend to us as well. Total logistic facility went out of service due to our Zebra handheld refusing to stay connected.   Turns out the region settings for wifi were reset to default. The defaults heavily restrict what channels/frequencies are used for wifi.   Look into the network settings and check if the country/region is still correct.   We're still unsure why this happend.  Our IT partner had this happen at multiple customers. ... View more