Hi Feo9a,
Sorry for my late reply.
(1.)
Does this problem happen if you enter different locations?
Could you check this matter with another carrier SIM card?
I would suggest you try to reset the network settings.
( settings> Reset options> reset WiFi,mobile & Bluetooth )
(3.)
If your Asus Launcher is on version 5.5.2.19, please restore it for a check.
( settings > apps & notifications > see all apps> app info> Asus Launcher > storage & memory >clear storage and cache.)
(4.)
For the WiFi problem, Do you connect 2.4g or 5g WiFi?
Please kindly check this matter under safe mode.
In safe mode, only the factory pre-installed applications will be loaded.
For instructions, please refer to the link below:
http://www.asus.com/zentalk/forum.php?mod=viewthread&tid=3105&highlight=safe%2Bmode
If this problem still appears, I would suggest you bring your phone to a local service center for a check.
Sorry for any inconvenience this may cause.
http://www.asus.com/support/Service-Center-All-Countries/
(6.)
This issue will be fixed in the future firmware update, please stay tuned with ZenTalk forum.
https://www.asus.com/zentalk/forum.php?mod=forumdisplay&fid=39
(7.)
Have you use optimization? If yes,I suggest you choose not optimized.
Please go settings> apps & notifications> see all apps >reset app preference.
(9.)
What's the direction that you take a photo when you encounter this problem?
Thank you.