Latest Viber 15 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.4.2; ru-ru; HTC Desire 526G dual sim Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36 Viber/15.8.0.6 Android 4 Desire 526G Dual SIM
Mozilla/5.0 (Linux; U; Android 4.3; ru-ru; SM-N7502 Build/JLS36C) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 Viber/15.1.0.3 Android 4 Galaxy Note 3 Neo Duos
Mozilla/5.0 (Linux; U; Android 4.3; ru-ru; MediaPad T1 8.0 Build/HuaweiMediaPad) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Safari/534.30 Viber/15.2.0.14 Android 4 MediaPad T1 8
Mozilla/5.0 (Linux; U; Android 4.2.2; ru-ru; PAP5500DUO Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 Viber/15.2.0.14 Android 4 PAP5500DUO
Mozilla/5.0 (Linux; Android 9; ZTE Blade V1000RU Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.136 Mobile Safari/537.36 Viber/15.7.0.5 Android 9 Blade V10
Mozilla/5.0 (Linux; Android 9; ZTE Blade L8 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 Viber/15.2.0.14 Android 9 Blade L8
Mozilla/5.0 (Linux; Android 9; ZTE Blade A7 2020 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.101 Mobile Safari/537.36 Viber/15.3.0.2 Android 9 Blade A7 (2020)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A7 2020 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/77.0.3865.92 Mobile Safari/537.36 Viber/15.3.0.2 Android 9 Blade A7 (2020)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A7 2020 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 Viber/15.2.0.11 Android 9 Blade A7 (2020)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A7 2019RU Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/90.0.4430.91 Mobile Safari/537.36 Viber/15.8.0.6 Android 9 Blade A7 (2019)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A7 2019RU Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/90.0.4430.91 Mobile Safari/537.36 Viber/15.5.0.15 Android 9 Blade A7 (2019)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A7 2019 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 Viber/15.2.0.11 Android 9 Blade A7 (2019)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A7 2019 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.93 Mobile Safari/537.36 Viber/15.1.0.3 Android 9 Blade A7 (2019)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A3 2020 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.99 Mobile Safari/537.36 Viber/15.4.0.1 Android 9 Blade A3 (2020)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A3 2019RU Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.86 Mobile Safari/537.36 Viber/15.1.0.3 Android 9 Blade A3 (2019)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A3 2019RU Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.105 Mobile Safari/537.36 Viber/15.4.0.1 Android 9 Blade A3 (2019)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A3 2019RU Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 Viber/15.3.0.2 Android 9 Blade A3 (2019)
Mozilla/5.0 (Linux; Android 9; ZTE A7000 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.90 Mobile Safari/537.36 Viber/15.0.0.0 Android 9 Blade A7 (2020)
Mozilla/5.0 (Linux; Android 9; ZTE 2050 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/77.0.3865.92 Mobile Safari/537.36 Viber/15.0.0.0 Android 9 Blade 20 Smart
Mozilla/5.0 (Linux; Android 9; YAL-L21 Build/HUAWEIYAL-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.93 Mobile Safari/537.36 Viber/15.0.0.0 Android 9 Honor 20