Wifi/mobility data issue

Saying I have 100% connections but having lot delay or lot things need wifi/mobility data saying need connection while my phone alr had the icon said I have wifi and everything. Apples center alr check my phone and they told me my phone work 100% but still having the issue

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0