I am not receiving all my calls or texts. It appears to be random. Typically it is while I am connected to wifi. It has happened 2 or 3 times with a family member who also has an iPhone 6. They will show the sent text or call on their phone but it won't be on mine. The last time it happened the text came through on my iPad and never showed up on my phone. My iPad was sitting less than 2 feet from my phone. Any ideas for solutions?