Viber is blocked, restricted or age-gated in 10 countries and territories — 6 complete bans and 4 partial restrictions in total.
Egypt does not impose a blanket ban on Viber, but authorities have repeatedly throttled or interfered with VoIP features on messaging apps including Viber and WhatsApp; text messaging generally works. Making international calls over unlicensed VoIP is technically illegal under Article 72 of Egypt's Telecommunication Regulation Law.
Islamic Republic of Iran blocks or filters Viber alongside other major foreign messaging services. The United Kingdom government's 2025 country-information note identifies Viber among the messaging apps blocked in Islamic Republic of Iran.
Oman restricts unlicensed VoIP services: Viber voice and video calls are blocked by local carriers under telecommunications licensing rules, while messaging still works. Human Rights Watch and other groups have long documented Oman's ban on consumer VoIP platforms alongside the United Arab Emirates and Qatar.
Viber's messaging and calling service was blocked on mainland Chinese networks during the 2014 crackdown on foreign chat apps; it was reachable only through a VPN in contemporaneous testing.
Qatar restricts unlicensed VoIP services: Viber voice and video calls are blocked on local networks, while messaging still works. The restriction is part of the same Gulf-region licensing regime that also blocks WhatsApp, Skype, and FaceTime calling.
Roskomnadzor blocked access to Viber in December 2024, citing the app's failure to comply with national legislation and its refusal to remove content regarding the war in Ukraine.
Viber has long been inaccessible in Turkmenistan under the state's broad block on foreign messaging and social-media services.
Viber's calling service remains blocked in the United Arab Emirates under the unlicensed-VoIP regime; Freedom House reports that the block has been in place since 2013. This is a feature restriction rather than a block of text messaging.