Share your experience!
My Xperia ZR shots down whenever I turn on mobile data even with battery well charged. When working without the data turned on, there's no problem.
It's been more than a year I got this mobile.
What could be the problem
Hi @Ebm, that sounds very strange, sorry to hear about this. 
Do you remember if you started to experience this behaviour after updating your device or installing a new application?
If you are connected to a Wi-Fi network, can you then use the Internet without the device shutting down? If that is the case, do you have another SIM card that you can try in your device? You can also ask a family member, a friend, or a colleague if you can borrow theirs for a short while, just so we can see if this is caused by your SIM card or not.
Let me know how it goes!
Thanks Jonas for your post.
I tried all those but wasn't successful.
I contacted a repairer and was told it's the battery.
Got a new one and it's good now
Hi again @Ebm and I'm glad to hear that it's working now again after replacing the battery!
Time to enjoy the Internet when you are not connected to a Wi-Fi again then! 
Have a great day and let me know if there is anything else.