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I've got m4 dual sim version. When I'm using viber with my mobile Internet, not with wi fi, it doesn't work! All the other apps do! I've checked the settings, app permissions.... Nothing helped
Topic edited by Rickard
Solved! Go to Solution.
I just solve mine! No thanks to but to myself
Go to your Setting
Internet Setting choose Mobile Network
chosse Access Point Names (APN)
click your provider
scroll down to APN Contol chose
IPV4 / IPV6
chose Roaming protocol change it to
Ipv4/IPV6