Latest Opera Mobile 54 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 9; Y9Plus Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 Y9 Plus
Mozilla/5.0 (Linux; U; Android 9; TECNO LC6 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.116 Mobile Safari/537.36 OPR/54.0.2254.56224 Android 9 Pouvoir 3 Air
Mozilla/5.0 (Linux; U; Android 9; SM-A707F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 Galaxy A70s
Mozilla/5.0 (Linux; U; Android 9; Primo_NF4_2GB Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 Primo NF4 2GB
Mozilla/5.0 (Linux; U; Android 9; P13_Blue Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 P13 Blue
Mozilla/5.0 (Linux; U; Android 9; LLD-AL20 Build/HONORLLD-AL20; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.86 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 Honor 9i
Mozilla/5.0 (Linux; U; Android 9; itel W6501 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.116 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 P36
Mozilla/5.0 (Linux; U; Android 9; itel W6004 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.116 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 A56 LTE
Mozilla/5.0 (Linux; U; Android 9; itel W6002 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.105 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 S15
Mozilla/5.0 (Linux; U; Android 9; itel W5505 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 A36
Mozilla/5.0 (Linux; U; Android 9; itel W5505 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.116 Mobile Safari/537.36 OPR/54.0.2254.56224 Android 9 A36
Mozilla/5.0 (Linux; U; Android 9; itel W5005 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.116 Mobile Safari/537.36 OPR/54.0.2254.56224 Android 9 P15
Mozilla/5.0 (Linux; U; Android 9; itel L6501 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.116 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 Vision 1 Plus
Mozilla/5.0 (Linux; U; Android 9; Infinix X652B Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.86 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 S5 Lite
Mozilla/5.0 (Linux; U; Android 9; Infinix X626 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.105 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 S4
Mozilla/5.0 (Linux; U; Android 9; Infinix X626 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 9 S4
Mozilla/5.0 (Linux; U; Android 9; GLK-LX1U Build/HUAWEIGLK-L21U; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/72.0.3626.121 Mobile Safari/537.36 OPR/54.0.2254.56232 Android 9 Nova 5i
Mozilla/5.0 (Linux; U; Android 9; DUK-L09 Build/HUAWEIDUK-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.127 Mobile Safari/537.36 OPR/54.0.2254.55624 Android 9 Honor 8 Pro
Mozilla/5.0 (Linux; U; Android 8.1.0; vivo 1812 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.110 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 8 Y81i
Mozilla/5.0 (Linux; U; Android 8.1.0; VFD320 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.126 Mobile Safari/537.36 OPR/54.0.2254.56148 Android 8 Smart C9