I have a 6+, my husband has a 5s. The only change we have made is a few days ago I upgraded the 6+ to Version 10.0.2.
Today, both our phones rang at the same time, he answered, my call dropped, so I didn't think anything more of it. Then, another call came through on my phone, without his phone ringing. My phone said something like "call coming from this I-phone". The person was trying to reach my husband.
Neither of us is technologically savvy. What did we do & how can we fix this?