Latest UC Browser 4 user agents:

User Agent Platform Device
UCWEB/2.0 (Windows; U; wds 8.10; zh-CN; Microsoft; RM-1113_1003) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 640
UCWEB/2.0 (Windows; U; wds 8.10; xx; NOKIA; RM-821_im_india_443) U2/1.0.0 UCBrowser/4.2.0.524 U2/1.0.0 Mobile Windows Phone 8 Lumia 920
UCWEB/2.0 (Windows; U; wds 8.10; ru-RU; NOKIA; RM-984_1045) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 830
UCWEB/2.0 (Windows; U; wds 8.10; en-US; NOKIA; RM-976_1171) U2/1.0.0 UCBrowser/4.0.0.498 U2/1.0.0 Mobile Windows Phone 8 Lumia 630
UCWEB/2.0 (Windows; U; wds 8.10; en-US; NOKIA; RM-914_im_mea3_394) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 520
UCWEB/2.0 (Windows; U; wds 8.10; en-IN; NOKIA; RM-978_1046) U2/1.0.0 UCBrowser/4.2.0.524 U2/1.0.0 Mobile Windows Phone 8 Lumia 630
UCWEB/2.0 (Windows; U; wds 8.10; en-IN; NOKIA; RM-975_1005) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 635
UCWEB/2.0 (Windows; U; wds 8.10; en-IN; Microsoft; RM-1099_1005) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 430
UCWEB/2.0 (Windows; U; wds 8.10; en-IN; Microsoft; RM-1090_1001) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 535
UCWEB/2.0 (Windows; U; wds 8.10; de-DE; NOKIA; RM-978_1034) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 630
UCWEB/2.0 (Windows; U; wds 8.10; de-DE; NOKIA; RM-976_1166) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 630
UCWEB/2.0 (Windows; U; wds 8.10; de-DE; NOKIA; RM-975_1080) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 635
UCWEB/2.0 (Windows; U; wds 8.10; de-DE; NOKIA; RM-974_1080) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 635
UCWEB/2.0 (Windows; U; wds 8.10; de-DE; NOKIA; RM-846_eu_euro2_357) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 620
UCWEB/2.0 (Windows; U; wds 8.10; de-DE; NOKIA; RM-1045_1012) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 930
UCWEB/2.0 (Windows; U; wds 8.10; de-DE; NOKIA; RM-1039_1009) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 735
UCWEB/2.0 (Windows; U; wds 8.10; de-DE; NOKIA; RM-1038_1009) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 735
UCWEB/2.0 (Windows; U; wds 8.10; de-DE; Microsoft; RM-1077_1011) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 640
UCWEB/2.0 (Windows; U; wds 8.0; zh-CN; NOKIA; RM-914_apac_prc_227) U2/1.0.0 UCBrowser/4.2.1.541 U2/1.0.0 Mobile Windows Phone 8 Lumia 520
UCWEB/2.0 (Windows; U; wds 8.0; xx; NOKIA; RM-885_im_india_249) U2/1.0.0 UCBrowser/4.1.0.504 U2/1.0.0 Mobile Windows Phone 8 Lumia 720