Does the stock calendar go back more than three months or is that as far as it goes? It goes back on my computer but only goes back three months on my phone. Are there any settings I'm not finding?
The phone will store calendar events for almost as long as you have the phone, BUT if you did a factory reset or deleted your Google account and recreated it, it will only pull back about 2-3 months worth of past events. No way around it or so it seems.