Latest Opera Mobile 53 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 10; SM-N822F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.3.2569.76 Mobile Safari/123.49 OPR/53.5.5729.62457 Android 10 SM-N822F
Mozilla/5.0 (Linux; Android 10; SM-N812F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.3.2569.76 Mobile Safari/123.49 OPR/53.5.5729.62457 Android 10 SM-N812F
Mozilla/5.0 (Linux; Android 10; SM-N682F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.3.2569.76 Mobile Safari/123.49 OPR/53.5.5729.62457 Android 10 SM-N682F
Mozilla/5.0 (Linux; Android 10; SM-N582F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.3.2569.76 Mobile Safari/123.49 OPR/53.5.5729.62457 Android 10 SM-N582F
Mozilla/5.0 (Linux; Android 10; SM-N981F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.3.2569.76 Mobile Safari/123.49 OPR/53.5.5729.62457 Android 10 SM-N981F
Mozilla/5.0 (Linux; Android 10; SM-N978F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.3.2569.76 Mobile Safari/123.49 OPR/53.5.5729.62457 Android 10 SM-N978F
Mozilla/5.0 (Linux; Android 7.1.1; OPPO R9sk Build/NMF26F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.157 Mobile Safari/537.36 OPR/53.0.2569.141117 Android 7 R9s
Mozilla/5.0 (Linux; U; Android 9; Y8 Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.152 Mobile Safari/537.36 OPR/53.1.2254.55490 Android 9 Y8
Mozilla/5.0 (Linux; U; Android 9; vivo 2007 Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 OPR/53.2.2254.55976 Android 9 Y12i
Mozilla/5.0 (Linux; U; Android 9; TECNO LC6 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 OPR/53.1.2254.55490 Android 9 Pouvoir 3 Air
Mozilla/5.0 (Linux; U; Android 9; TECNO KC6 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.75 Mobile Safari/537.36 OPR/53.1.2254.55363 Android 9 Spark 4 Air
Mozilla/5.0 (Linux; U; Android 9; TECNO CC9 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/87.0.4280.141 Mobile Safari/537.36 OPR/53.1.2254.55490 Android 9 Camon 12 Pro
Mozilla/5.0 (Linux; U; Android 9; TECNO CC6 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 OPR/53.1.2254.55703 Android 9 Camon 12 Air
Mozilla/5.0 (Linux; U; Android 9; TECNO CC6 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 OPR/53.1.2254.55490 Android 9 Camon 12 Air
Mozilla/5.0 (Linux; U; Android 9; SHV40 Build/S5270; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.152 Mobile Safari/537.36 OPR/53.2.2254.55976 Android 9 Aquos S
Mozilla/5.0 (Linux; U; Android 9; LLD-AL20 Build/HONORLLD-AL20; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/87.0.4280.141 Mobile Safari/537.36 OPR/53.1.2254.55490 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/88.0.4324.181 Mobile Safari/537.36 OPR/53.1.2254.55490 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/53.1.2254.55703 Android 9 A56 LTE
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/53.1.2254.55490 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/79.0.3945.116 Mobile Safari/537.36 OPR/53.1.2254.55703 Android 9 S15