Latest Opera Mobile 20 user agents:

User Agent Platform Device
Mozilla/5.0 Linux; U; Android 8.0.0; ZE520KL Build/OPR1.170623.026; wv AppleWebKit/537.36 KHTML, like Gecko Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 OPR/20.0.2254.109835 Android 8 ZenFone 3
Mozilla/5.0 Linux; U; Android 6.0.1; SM-J106H Build/MMB29Q; wv AppleWebKit/537.36 KHTML, like Gecko Version/4.0 Chrome/75.0.3770.101 Mobile Safari/537.36 OPR/20.1.2254.110627 Android 6 Galaxy J1 mini Prime
Mozilla/5.0 (Linux; U; Android 8.1.0; TECNO KB7 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.110 Mobile Safari/537.36 OPR/20.0.2254.109835 Android 8 Spark 3
Mozilla/5.0 (Linux; U; Android 8.1.0; DRA-LX2 Build/HUAWEIDRA-LX2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 OPR/20.0.2254.109835 Android 8 Y5 Prime (2018)
Mozilla/5.0 (Linux; U; Android 7.1; vivo X3t Build/JOP40D) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 OPR/20.0.2254.109835 Android 7 X3t
Mozilla/5.0 (Linux; U; Android 7.0; TECNO W1 Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.91 Mobile Safari/537.36 OPR/20.0.2254.109835 Android 7 W1
Mozilla/5.0 (Linux; U; Android 7.0; TECNO CX Air Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36 OPR/20.0.2254.109835 Android 7 Camon CX Air
Mozilla/5.0 (Linux; U; Android 7.0; SM-G930P Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/56.0.2924.87 Mobile Safari/537.36 OPR/20.0.2254.110284 Android 7 Galaxy S7
Mozilla/5.0 (Linux; U; Android 7.0; Moto C Build/NRD90M.058; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36 OPR/20.1.2254.110627 Android 7 Moto C
Mozilla/5.0 (Linux; U; Android 7.0; LG-VS995 Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.91 Mobile Safari/537.36 OPR/20.1.2254.110627 Android 7 V20
Mozilla/5.0 (Linux; U; Android 6.0; XT1078 Build/MPBS24.65-34-5; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/45.0.2454.95 Mobile Safari/537.36 OPR/20.0.2254.110284 Android 6 XT1078
Mozilla/5.0 (Linux; U; Android 6.0; TECNO W5 Lite Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.91 Mobile Safari/537.36 OPR/20.0.2254.109835 Android 6 W5 Lite
Mozilla/5.0 (Linux; U; Android 6.0; TECNO L8 Lite Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.91 Mobile Safari/537.36 OPR/20.0.2254.109835 Android 6 L8 Lite
Mozilla/5.0 (Linux; U; Android 6.0; TECNO L8 Lite Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/52.0.2743.98 Mobile Safari/537.36 OPR/20.0.2254.109835 Android 6 L8 Lite
Mozilla/5.0 (Linux; U; Android 6.0; Micromax Q4201 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/60.0.3112.116 Mobile Safari/537.36 OPR/20.0.2254.110285 Android 6 Q4201
Mozilla/5.0 (Linux; U; Android 6.0; LG-K430 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 OPR/20.0.2254.110284 Android 6 K10
Mozilla/5.0 (Linux; U; Android 6.0; Infinix HOT 4 Lite Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.91 Mobile Safari/537.36 OPR/20.0.2254.109835 Android 6 Hot 4 Lite
Mozilla/5.0 (Linux; U; Android 6.0; BV6000 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/44.0.2403.119 Mobile Safari/537.36 OPR/20.0.2254.109835 Android 6 BV6000
Mozilla/5.0 (Linux; U; Android 6.0.1; SM-G532G Build/MMB29T; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.91 Mobile Safari/537.36 OPR/20.0.2254.110284 Android 6 Galaxy J2 Prime
Mozilla/5.0 (Linux; U; Android 6.0.1; HTC M8St Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 OPR/20.0.2254.109835 Android 6 M8St