I have a strange issue that just started this morning. I have 3 iOS devices (an iPad Air, a 6+ and a 6, don't ask). Starting this morning, if I connect the 6 to the 6+ hotspot, the iPad automatically connects to the same hotspot. If I connect 6 to company wifi, all 3 devices connect to the same wifi. Neither the 6+ nor the iPad were ever programmed to my company wifi. If I disconnect the company wifi on one device, it disconnects on all 3 devices. Same with the hotspot. I've had an iPad, a 6+ and a 6 for several weeks now and it just started today.