1. Jcampagna42's Avatar
    I have a SGH-1337 with Android Version 4.4.4.
    It was an unlocked A T & T device, but I bought it used and am on Ting Mobile, with the Sprint network.
    I get poor coverage around my house and I don't live in the boondocks. Texts don't go through, voice mail doesn't get delivered and I have Emergency Service only way too frequently.
    I found out that the PRl (preferred roaming list) may not be set properly.
    The way to check on the s4 is settings>more>system update.
    The problem is that system update is nowhere to be found on my phone.
    Where is it?
    08-07-2015 08:54 AM
  2. Petr Tanker's Avatar
    It seems to be locked for AT&T. Try to download the settings from T-Mobile center (Just choose your mobile type and then let the operator send you settings for SMS, MMS, WiFi and so on...)
    08-07-2015 09:07 AM
  3. Oskathemighty Edwards's Avatar
    I have a Galaxy s4 and was having problems after upgrading to windows 10
    after trying everything including keis and turning on debugging mode on my phone.
    All I did was unplug the phone from the computer and restarted the phone
    then I plugged it back in and it recognized the phone updated with a driver
    Now it works just fine...This worked for me.. May not be a cure all remedy
    bottom line I'm happy and don't have to seek any more solutions!
    08-07-2015 09:20 AM
  4. Jcampagna42's Avatar
    Thanks for the tip. Not quite sure how to go about doing this.
    Why would I try to download settings from T-Mobile?
    Its an A t & t phone.
    Can you elaborate?
    08-07-2015 10:10 AM

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