Fix No 4G Data / No Service T-Mobile - Add New APN

Описание: T-Mobile APN & Data Settings

Access Settings from your device.
Scroll down to NETWORK CONNECTIONS
Tap More (networks).
Tap Mobile Networks.
Tap Access Point Names.
Delete any existing APNs.
Select Add APN and enter the following APN Settings
Name: T-Mobile US LTE
APN: fast.t-mobile.com
Proxy: leave blank
Port: leave blank
Username: leave blank
Password: leave blank
Server: leave blank
MMSC: http://mms.msg.eng.t-mobile.com/mms/w...
Multimedia message proxy: leave blank
Multimedia message port: leave blank
MCC: 310
MNC: 260
Authentication type: None
APN Type: default, supl, MMS OR Internet+MMS
Default Android provides a text field to enter: default,supl,mms
Samsung provides an Internet+MMS radio button to select.
APN protocol: IPv6
APN roaming protocol: IPv4
Turn APN on/off: APN turned on
Bearer: Unspecified
Mobile virtual network operator type: None
Mobile virtual network operator value: leave blank
Tap the Menu key in the top right.
Tap Save.

Select the newly created APN profile so that it's used for your data connections from now on.

Don't forget to check if your Data connection is ON.