Latest Opera Mobile 12 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 13; moto g 5G (2022) Build/T1SAS33.73-40-0-12-20; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/146.0.7680.119 Mobile Safari/537.36 OPR/12.5.2254.75877 Android 13 Moto G 5G (2022)
Mozilla/5.0 (Linux; U; Android 16; SM-A366U Build/BP2A.250605.031.A3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/146.0.7680.119 Mobile Safari/537.36 OPR/12.5.2254.75877 Android 16 Galaxy A36 5G
Opera/12.02 (Android 4.1; Linux; Opera Mobi/ADR-1111101157; U; en-US) Presto/2.9.201 Version/12.10 Android 4 Unknown
Mozilla/5.0 (Linux; U; Android 11; moto g power (2021) Build/RZBS31.Q2-143-27-29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/146.0.7680.119 Mobile Safari/537.36 OPR/12.5.2254.75877 Android 11 Moto G Power (2021)
Mozilla/5.0 (Linux; U; Android 16; 24090RA29G Build/BP2A.250605.031.A3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/146.0.7680.65 Mobile Safari/537.36 OPR/12.3.2254.75517 Android 16 Redmi Note 14 Pro 5G
Opera/9.80 (SymbianOS/Belle; Series60/5.0; Nokia808/20.0.019; Opera Mobi/SYB-1204232254; U; en-GB) Presto/2.10.254 Version/12.00 Symbian OS Series 60 5 808
Opera/9.80 (S60; SymbOS/Belle; Nokia 808_PureView; Opera Mobi/SYB-1204232254; U; en) Presto/2.10.254 Version/12.00 Symbian OS Series 60 808
Opera/9.80 (Linux; U; Android 10; es-us; XTAB 781+ Build/JOP40D; Opera Mobi/ADR-1305251841) Presto/2.12.423 Version/12.16 Android 10 XTAB 781+
Opera/9.80 (Linux i686; Opera Mobi/2; MeeGo; U; en-GB) Presto/2.10.254 Version/12.00 MeeGo Unknown
Opera/9.80 (Linux armv7l; Opera Mobi/1; MeeGo) Presto/2.11.355 Version/12.10 MeeGo Unknown
Opera/9.80 (J2ME/MIDP; Nokia 6233; Opera Mobi/ADR) Presto/2.12.423 Version/12.16 Symbian 6233
Opera/9.80 (Android; Linux; U; id; Opera Mobile /ADR-1305251841) Presto/2.11.355 Version/12.16 Android Unknown
Opera/9.80 (Android 4.1.2; Linux; Opera Mobi/ADR-1301080958) Presto/2.11.355 Version/12.10 Android 4 Unknown
Opera/9.80 (Android 4.1.2; Linux; Opera Mobi/ADR-1210241511) Presto/2.11.355 Version/12.10 Android 4 Unknown
Opera/9.80 (Android 4.1.2; Linux; Opera Mobi/ADR-1207201848; U; ru) Presto/2.10.254 Version/12.00 Android 4 Unknown
Opera/9.80 (Android 4.1.2; Linux; Opera Mobi/ADR-1207201819; U; ru) Presto/2.10.254 Version/12.00 Android 4 Unknown
Opera/9.80 (Android 4.1.2; Linux; Opera Mobi/ADR-1207201819; U; ko-KR) Presto/2.10.254 Version/12.00 Android 4 Unknown
Opera/9.80 (Android 4.1.2; Linux; Opera Mobi/ADR-1203051631; U; ru) Presto/2.10.254 Version/12.00 Android 4 Unknown
Opera/9.80 (Android 4.1.1; Linux; Opera Tablet/ADY-1305080823) Presto/2.11.355 Version/12.10 Android 4 Unknown
Opera/9.80 (Android 4.1.1; Linux; Opera Tablet/ADY-1301071651) Presto/2.11.355 Version/12.10 Android 4 Unknown