To put it bluntly, the reasons for the problem of iPhone Reminders not working are no more than hardware issues and software glitches. As long as you ensure the trouble not to be caused by hardware-related failures, you are able to apply an iOS repair tool to support you. Therefore, after carrying out all the above, in case the issue is there as before, there is also no need for you to lose too much sleep over it, for Joyoshare UltFix specialized in fixing various iOS issues will be introduced to you below.
Talking of Joyoshare UltFix iOS System Recovery, what impresses users most is that the program is come out with three modes, that is as follows, recovery mode, standard mode, and advanced mode. Or, to be more specific, it allows your iPhone to enter/exit recovery mode with one click for free. Standard mode is used for repairing some ordinary iOS issues with no data loss, such as Reminders app now working, Facebook notifications not working, iMessage not working, and such. For advanced mode, its feature is to fix serious iOS problems like fixing a disabled iPhone. Just these functions can be more than enough to work for you well, let alone other abilities of it.
Key Features of Joyoshare UltFix iOS System Recovery
Be able to repair over 30 kinds of iOS problems
Fix iPhone Reminders not working with no data loss
Support almost all iOS device even including Apple TVs and iOS 13