Hey guys,
I recently bought an old Samsung Galaxy S4 Active SGH-i537 (AT&T) stock Android 4.4.2 - detailed specs at the end of this post.
>>>> This is my problem. <<<<
My GSM and LTE doesn't work any more. The phone says there is no SIM-Card, though I inserted a working Simple Mobile SIM (T-Mobile network). Moreover calling, texting via SMS and mobile data (Internet) do not work. :crying:
>>>> What happened <<<<
I opened the dialer and typed in *#9090#. A new Window "DIAG CONFIG" popped up. I selected
1 DM/DUM over HS-USB(*)
in the menu. After that the other menu points disappeared and the mobile carrier icon (http://ift.tt/1PlBsfJ) changed to a no-connection sign (http://ift.tt/1PlBsMK). When I type in *#9090# the "ServiceMode" window pops up but without any menu items.
>>>> That's why I did the *#9090# thing :confused: <<<<
I updated from Stock Android 4.4.2 to Stock Android 5.0.1 (Lollipop) keeping my root-access following this instruction:
http://ift.tt/1PlBsfL
The installation and everything went just fine. But I couldn't use my Mobile Internet any more (Simple Mobile is my mobile network operator which uses the T-Mobile network), though it had worked on Android 4.4.2 perfectly. So I flashed back to the old Android 4.4.2 and it worked again. I thought there had to be some kind of AWS/LTE-locking in the stock Android 5.0.1 firmware. After some searching on the Internet I came to the conclusion that there has to be a LTE locking on the phone. So I tried this tutorial:
http://ift.tt/10yNFHJ
But it didn't work for me (probably because Samsung locked their new firmware). My GSM/LTE still worked!
Afterwards I tried the *#9090# think (I got it from this post: http://ift.tt/1PlBsfP) and that's where I ended up.
I know this was stupid. :(
But please help me. :rolleyes: This is my only phone and without it I have no connection to my family and friends. :crying:
Thank you so much in advance!
>>>> Phone Specifications <<<<
Model: SGH-i537
Android version: 4.4.2
Basebandversion: "Unknown"
Kernel version: 3.4.0-987011
Build number: KOT49H.I537UCUCNE3
Security boot status: Type: Samsung
Security software version: MDF v1.0 Release 2
I recently bought an old Samsung Galaxy S4 Active SGH-i537 (AT&T) stock Android 4.4.2 - detailed specs at the end of this post.
>>>> This is my problem. <<<<
My GSM and LTE doesn't work any more. The phone says there is no SIM-Card, though I inserted a working Simple Mobile SIM (T-Mobile network). Moreover calling, texting via SMS and mobile data (Internet) do not work. :crying:
>>>> What happened <<<<
I opened the dialer and typed in *#9090#. A new Window "DIAG CONFIG" popped up. I selected
1 DM/DUM over HS-USB(*)
in the menu. After that the other menu points disappeared and the mobile carrier icon (http://ift.tt/1PlBsfJ) changed to a no-connection sign (http://ift.tt/1PlBsMK). When I type in *#9090# the "ServiceMode" window pops up but without any menu items.
>>>> That's why I did the *#9090# thing :confused: <<<<
I updated from Stock Android 4.4.2 to Stock Android 5.0.1 (Lollipop) keeping my root-access following this instruction:
http://ift.tt/1PlBsfL
The installation and everything went just fine. But I couldn't use my Mobile Internet any more (Simple Mobile is my mobile network operator which uses the T-Mobile network), though it had worked on Android 4.4.2 perfectly. So I flashed back to the old Android 4.4.2 and it worked again. I thought there had to be some kind of AWS/LTE-locking in the stock Android 5.0.1 firmware. After some searching on the Internet I came to the conclusion that there has to be a LTE locking on the phone. So I tried this tutorial:
http://ift.tt/10yNFHJ
But it didn't work for me (probably because Samsung locked their new firmware). My GSM/LTE still worked!
Afterwards I tried the *#9090# think (I got it from this post: http://ift.tt/1PlBsfP) and that's where I ended up.
I know this was stupid. :(
But please help me. :rolleyes: This is my only phone and without it I have no connection to my family and friends. :crying:
Thank you so much in advance!
>>>> Phone Specifications <<<<
Model: SGH-i537
Android version: 4.4.2
Basebandversion: "Unknown"
Kernel version: 3.4.0-987011
Build number: KOT49H.I537UCUCNE3
Security boot status: Type: Samsung
Security software version: MDF v1.0 Release 2
via xda-developers http://ift.tt/1NMygoV
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