Wow! 3 phones? They all sync to the same MS ID account and email?
I believe the OneDrive limit is per
account, not per device.
Per the announcement on the OneDrive blog (
https://blog.onedrive.com/your-onedrive-just-got-bigger/ ):
"New and existing personal OneDrive
accounts will come with:
15 GB of free storage (up from 7 GB)"
If you use a single log-in for all your devices, accessing the same OneDrive account on all of them, you only have a single OneDrive account, which is limited to 15GB. I know that's not what you wanted to hear... Don't shoot the messenger.
They did lower the price of additional storage... 100 GB for $24/yr? Not too bad.
If you're an Office 365 subscriber, you get 1 TB included with your Office subscription. And if you happen to have a .edu e-mail handy, you can snag Office 365 University at $80 for 4 years (which gets you that 1 TB for 4 years + 60 Skype world minutes every month). I'm not sure if this is limited to US students or not...