happened to me after riding maybe five times on MT-09 :) Since my iphone was a bit old anyways decided to buy a new one and this time also get the apple insurance just in case.
For navigation I now use Beeline. You need to get used a bit more for the way it gives instructions but it's also way less distracting than having a phone on your bike.
Ref: https://beeline.co/pages/beeline-moto