samsung galaxy s3 problems with mobile internet

[kdawg]

Hi i got my samsung s3 few days ago when connected to wi-fi the internet works but when using mobile internet it works for a few minutes then doesnt work what could be the problem? Thanks

 

[ClintZA]

Did you purchase a microSIM or did you cut your old SIM?

 

[kdawg]

i purchased a microsim

 

[Ockie]

Check to see if you have proxy settings in your APN. If so...delete it.