OK, another turn in a different direction, sorry. I have a Blackberry Keyone, supposed to run on Android, so I tested Xdrip+ on that, and it works, nice graphs. Great, only need to carry one phone.
One issue though, I can't get it to send to Diasend where my doctor can see my data. Not critical for me, but since I'm trying to convince him to have the hospital budget pay for the Dexcom cost, I'm sure he won't be as enthusiastic if I don't use the Dexcom sw so he can't see my data. Anybody know about Diasend, with Xdrip+