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Active Level 1
Since a few days my J3 pro phone app doesnt operate properly. 
Incoming calls cannot be taken, contact details will not be shown. 
The app warning pop-up cannot be deleted. I tried an optional phone app, but faults remain same.
Any idea, any hint? 
Thanks

11 Comments
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Active Level 4
Please try to do this.
Settings > Apps > Phone > Storage > Clear Cache
And let me know if it helps.
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Active Level 1
Ciao binobany.
Thank you very much for your reply.
Unfortunately it did not help.
Same fault still pops up, when doing a call - I cannot operate the app. I have attached a Screenshot (although it is in German writing, sorry)
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Active Level 4
Brother,
Verify that the SIM card is correctly installed and not damaged. Contact the carrier for assistance testing the SIM or for a replacement. If you have another active phone on the same network, you may be able to exchange SIM cards between the phones to test them.
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Active Level 4
May I know have you checked your Sim or not ?
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Active Level 1
Ciao binobany
Well, yes, I took my wife's Smartphone and found it operating perfectly with my sim.
Vice versa her sim in my Smartphone with same fault as described.
Take care
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Active Level 1
Ciao binobany
Many Thanks again 😁
I will be back home tomorrow having access to my older Smartphone.
I will check the sim card with it and let you know.
Take care
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Active Level 6
Wipe your cache partition.
(Switch off your phone. Press and hold, power button, home button and volume-up button for 4-5 seconds till the phone turn on and boot into the recovery mode.
Use volume keys to navigate to 'wipe cache partition.' Use power key to select and confirm. Then reboot your device. Normally, this will not effect any personal data or settings.)
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Active Level 1
Ciao Mohammed
Thank you very much for your reply and I will try that after breakfast.
I will let you know if this worked out well.
Take care
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Active Level 1
Apologies, Mohammed, it took a bit longer to react.
I followed your Instruction, but after wiping cache partition and reboot, the fault was still there 😪 Take care
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