How can i get mobile data to work?

[AC Question]

I got a used S5 Active from my dad. Its an AT&T phone. I put my T-Mobile sim card in and got it activated to be used. My plan includes unlimited data. But, I can't seem to access my mobile data, so if i am not connected to wifi, i can't use internet/maps, etc.

 

[Laura Knotek]

You'll need to change the apn.

Network

APN & data settings

To set the Access Point Name (APN) and turn on data settings, follow these steps:

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APN Settings

From any Home screen, tap*Apps.Tap*Settings.Scroll to 'NETWORK CONNECTIONS,'* then tap*More networks.Tap*Mobile networks.Tap*Access Point Names.To reset your APN, tap the*Menu*key and then tap*Reset to default.If available, tap the*T-Mobile US LTE*APN (the bullet point fills with green).To verify your APN, tap*T-Mobile US LTE*with the bullet point filled with green.Verify and update the following settings for the Data APN:Name:*T-Mobile US LTEAPN:*fast.t-mobile.comProxy:*<Not set>Port:*<Not set>Username:*<Not set>Password:*<Not set>Server:*<Not set>MMSC:*http://mms.msg.eng.t-mobile.com/mms/wapencMMS proxy:*<Not set>MMS port:*<Not set>MMS protocol:*WAP 2.0MCC:*310MNC:*260Authentication type:*NoneAPN type:*default, mms, suplAPN protocol:*IPv6APN roaming protocol:*IPv4Turn APN on/off:*APN turned onBearer:*UnspecifiedMobile virtual network operator type:*NoneMobile virtual network operator value:*NoneTap the*Menu*key in the top right.Tap*Save.Tap the desired APN profile you want to use. The bullet point fills with green next to the APN profile.

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Data Settings

From any Home screen, tap*Apps.Tap*Settings.Scroll to 'NETWORK CONNECTIONS,' then tap*More networks.Tap Mobile networks.Select the*Mobile data*check box to enable your data connection.Select the*Data roaming*check box when roaming internationally or to receive data when roaming domestically.*

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https://support.t-mobile.com/docs/DOC-10400

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