Viber
The dominant messaging app in Bulgaria. Locals use it far more than WhatsApp . essential for coordinating with hosts and guides.
💬 Messaging5 countriesEssential in 5
Available in these countries
Pro tips by country
Bulgaria: If a Bulgarian gives you their number, message them on Viber, not WhatsApp.
Greece: If a Greek business gives you a phone number, assume they prefer Viber first, WhatsApp second.
Myanmar: Share your Viber number when coordinating with local contacts . many won't have WhatsApp.
Serbia: Most Serbians use Viber instead of SMS . always try Viber first when contacting locals.
Ukraine: Join public Viber communities for cities you're visiting . locals post real-time shelter locations and curfew updates.