[Samsung Galaxy Watch] adfree:
Short tested with SM-R820 CTI4...

sdb install samsungapps-000004430744-7207805-300000406.wgt
pulled samsungapps-000004430744-7207805-300000406.wgt 100% 6MB
1 file(s) pulled. 0 file(s) skipped.
samsungapps-000004430744-7207805-300000406.wgt 487 KB/s (7207805 bytes in 14.430s)
path is /root/apps_rw/tmp/samsungapps-000004430744-7207805-300000406.wgt
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[start] val[update]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[10]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[12]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[15]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[17]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[20]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[23]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[25]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[28]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[30]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[33]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[35]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[38]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[41]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[43]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[46]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[48]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[51]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[53]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[56]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[58]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[61]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[64]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[66]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[69]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[71]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[74]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[76]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[79]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[82]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[84]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[87]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[89]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[92]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[94]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[97]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[install_percent] val[100]
__return_cb req_id[1] pkg_type[tpk] pkgid[com.samsung.samsung-pay-app] key[end] val[ok]
spend time for pkgcmd is [8598]ms

Icon not visible... nor hold Back Key do something...

sh-3.2# launch_app com.samsung.samsung-pay-app
... successfully launched

seems not uninstalled...

sh-3.2# pkgcmd -l

system apps pkg_type [tpk] pkgid [com.samsung.samsung-pay-app] name [Samsung Pay] version [[COLOR="Red"][B]3.0.0406[/B][/COLOR]] storage [internal]

Tested with Version 3.0.0406...

My ROOT is not the reason why not start... IMHO. :D

Best Regards