Phone application does not launch

REPRODUCIBILITY (% or how often): 100%
BUILD ID = OS VERSION (Settings > About product): 3.4.0.22
HARDWARE (Jolla1, Tablet, XA2,…): XA2+ Dual Sim
UI LANGUAGE: French
REGRESSION: (compared to previous public release: Yes, No, ?): Yes

DESCRIPTION:

When I’m clicking on green phone application, nothing happens.
I can however launch a call using contacts, or using messages swipe right then phone icon.

PRECONDITIONS:

Always happen.

STEPS TO REPRODUCE:

  1. Boot phone
  2. Click on green phone app…

EXPECTED RESULT:

I should have the phone keyboard etc.

ACTUAL RESULT:

No response at all, icon is highlighted then nothing

ADDITIONAL INFORMATION:

(Please ALWAYS attach relevant data such as logs, screenshots, etc…)
I had the phonebook issue I uninstalled after the black screen… I don’t know if it’s relevant to the issue.

Issue corrected itself just by waiting one day or two… must have been some random issue.