Internet connection not using wifi

[iamxuser]

I've been browsing the internet through wifi and the connection is good but when i tried connecting to a non wifi connection like mobile data it won't work. I even loaded my prepaid sim to be able to use the internet through it but still it would always say that i'm not connected. I already enabled the mobile data in the settings but still it won't. Do i still need to change anything?Appreciate your help.xperia z user here.

[Uliwooly]

try this

Settings > xperia > internet settings 

Don't forget to give Kudos

[shihstouch]

Check if you have the correct internet settings...

Go to Settings > More > Mobile networks > Access Point Names ( Call and check your network provider that you have correct settings )

Also low speed connection will also cause this issue