Why can't HTC Desire 526G+ connect to the internet using mobile data?

My HTC desire 526G unable to open any site through any browser when connecting internet by mobile data. But it is opening when connect on WI-FI or USB sharing? What may be reason and how to rectify it? When connecting through mobile data other application

You just have a weak mobile data connection. If you experience this all the time, you should contact your carrier to report your issue.

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