For T-Mobile, you can set the “APN” to “fast.t-mobile.com”. AT&T, you can set “APN” to “phone” or “pta”.
Now setting “APN” will get your data working but you still need to input additional settings to get your MMS working.
Step 5. You can usually Google APN settings for your carrier. Whether you are in Thailand or in the U.S., simply Google for your APN settings like:
Google “t-mobile APN 4G LTE” for T-Mobile 4G LTE APN settings in the U.S.
Google “True Move APN 3g” for True Move 4G APN settings in Thailand.
Eventually, you should be able to find the full APN settings for your carrier whether you live in Hawaii or on North Pole.
Once you have the correct APN settings, simply input them into your APN settings on the phone.
Step 6. Hit “Save” when done.
Step 7. Next, make sure to select the new APN Setting you have saved. Within 5-30 seconds, your phone should start picking up 3G or 4G LTE signals and your data should be working again on the phone.
Q: Is there easier way to do this?
A: Yes, there are several APN-related apps on Play Store that may have APN settings for your country’s carrier. The reason why I show you how to set it manually is because sometimes these apps may not have the APN setting for your country/carrier. Also this is the method you can use without downloading any apps.
UPDATE: You can also do the same for Sprint or Verizon if you don’t get signal automatically, see Sprint 4G LTE APN.
Here’s APN settings for U.S. T-Mobile and AT&T Networks:
AT&T 4G LTE APN
MMS Proxy: proxy.mobile.att.net
MMS port: 80
APN type: default,mms,supl,hipri
T-Mobile 4G LTE APN
MMS Proxy: 22.214.171.124
APN type: default
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