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Old September 21st, 2013, 08:47 PM   #1 (permalink)
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Default att s4 on tmobile network, internet is real slow

I have a att s4 that im using with a tmobile sim card everything works good except for the internet that it constantly gets real slow and sometimes wont connect at all,someone knows if theres a fix for this and how to do it

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Old September 21st, 2013, 09:09 PM   #2 (permalink)
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Not sure... but does installing a sim automatically update the APN?
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Old September 21st, 2013, 10:04 PM   #3 (permalink)
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How can I do that
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Old September 22nd, 2013, 11:40 AM   #4 (permalink)
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The preferred network type is probably set wrong. For AT&T, it defaults to "LTE/GSM auto (PRL)." Find out what the TMo setting should be, then set it as follows.
  1. From the phone dialer, dial *#*#4636#*#*
  2. Select Device information
  3. Scroll to the drop-down labeled "Set preferred network type"
  4. Tap the correct setting for TMo (note that this is a scrolling window)
  5. Press the back button
  6. DONE (it is not necessary to reboot)
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