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[Q] New DVP and a Go Phone sim

I just bought an "unlocked DVP", brand new and in the box... Current OS version: 7.10.7720.68, Carrier: ATT-US. My issue is this: I inserted my Sim card from my old phone (ATT Avail Go Phone) and the DVP says "no service"; I am unable to make or recieve calls-- anyone have any ideas on how to fix this?

rvmommy said:
I just bought an "unlocked DVP", brand new and in the box... Current OS version: 7.10.7720.68, Carrier: ATT-US. My issue is this: I inserted my Sim card from my old phone (ATT Avail Go Phone) and the DVP says "no service"; I am unable to make or recieve calls-- anyone have any ideas on how to fix this?
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Thats a ATT version of tje DVP. It should work right out of the box. At least the phone should have service, maybe some of the mms setting you may have to tweak later. Check if the phone is not in airplane mode and that everything is "ON".

Thanks for the help, I ended up having to call ATT and using the new sim that came with the phone, but its working now I love this phone and am sure I will have more questions, but I'm trying to read through everything else that everyone has written before I make someone angry by asking something that has been asked a million times already, lol

Unlocked Rogers Phone!

HI there, I just recently unlocked my Rogers phone and now its online Virgin Mobile. I put in the code and it gave me an error so I looked it up and it had to do with the firmware not accepting the code or something like that. I then decided to use the stock Rogers Firmware, the installation went smoothly then when I actually had it running I couldn't connect to the WiFi (it would say turning on but it wont.), Virgin Mobile network won't show I always have to go to settings and search for it and when I do get on the network and put my phone on lock I would get no service until I search for the network again. Also, when ever I make phone calls the screen turns black and nothing happens. My home phone would ring but nothing from my cell. So I decided to install Google Play Rom and it's the same thing.
Can someone please help!
Phone Information:
Model GT-I9505G
Android Version: 4.4.2
Kernal: 3.4.0-g22842f5
Build Number: KOT49H

jfltelra Custom ROM

This phone used to be on the Bluegrass Cellular network, I have contacted them and AT&T with no help. I have rooted the phone using Towel Root and used Advanced Signal Status to change my radio to LTE/GSM auto, and can also now change the radio options within the phone. When I select to register on the AT&T network, it sits for about 3 minutes, and says "Unable to register" the IMEI is clean, I'm assuming I need a custom firmware or something. At this point, I am willing to pay someone to help me fix this, it has caused me so much trouble. Thanks!
Someone had suggested I use This ROM.
Problem is, I need custom recovery, and I can't find one for jfltelra.
TWRP shows all the jflte's but mine (jfltelra)
Phone Info
Galaxy S4 SCH-I545L jfltelra
Android version 4.4.2
Baseband Version: I545LWWUFNK1
Build Number: KOT49H.I545LWWUFNK1

Use twrp for jflteusc works great.

samsung galaxy s4 Unknown IMEI Unknown Baseband Unknown Network

i was using this phone for like 3 years
just recently it started doing this where it would show no service and a quick reboot would fix the problem
now as of friday the day after thanksgiving the phone shows null everything no matter how many times i reboot and ive put new simcards in to check if that was the problem and it wasnt the simcard
i doubt the efs files are corrupted because i only flash stock OTA updates through odin no custom ROMS and ive taken very good care of this phone and follow tutorials to the "T" when i do anything of that sort
but anyways ill list everything that is null/unknown so you have a better idea of what the problem might be and in advanced id like to thank you for any help you may give me
i just want to give this phone to my mom to use.. its crazy right when im done paying it off that it stops working its basically an ipod now hopefully you can help me fix that
here we go....
Baseband Version: Unknown
Network: Unknown
Mobile Network Type: Unknown
Service State: Out Of Service
Mobile Network State: Disconnected
My Phone Number: Unknown
IMEI: Unknown
IMEISV: Unknown
Serial number :12580db0
if you need anymore information i will gladly give it to you thanks
and for the record that information is with a working sim card in it
i was on rooted 5.1 or something like that when it started doing it
and i downgraded through odin to stock OTA NB1 4.4.2

This thread is a duplicate of your earlier post. To help keep the forums clean we would encourage you to post only once. If you have additional information to add, add it to your original post.
I have closed this thread. Continued discussion can take place in the original at http://forum.xda-developers.com/galaxy-s4-att/help/imei-null-baseband-unknown-t3259388
Thanks!

samsung galaxy S4 unlocked asking for SIM network unlock pin

Hi guys
I recently purchased an S4 from an on-line professional seller, the guy apparently owns a physical store but sells some phones on-line
when the phone arrived, I turned it on without the SIM, insert my home's wi-fi connection password, and the phone started to update both apps, and the OS to lollipop
I installed the backup I previously got from my old s3 mini, installed all my apps from playstore, and once I installed whatsapp, I turned the phone off, and than on again, this with my SIM since whatsapp has to confirm my number
The phone accepted my PIN code, whatsapp accepted my number and restored it's backup, but the phone also asked for this SIM network unlock pin
I told the guy what's happening, he told me he would send me a new phone, but I suspect this can go wrong
If that's the case, can anyone here tell me how can I overcome this SIM network unlock pin issue ?
thanks in advance
Regards
Antonio

If the phone were unlocked for use on any carrier, you would never see the SIM unlock pin request screen. Since you are seeing that screen, the phone is not unlocked.
To resolve this, root your phone and downgrade the phone's modem to an Android 4.2.2 version. Find a copy of RegionLock Away on XDA or through Google, copy it to your S4 and install it. Run it. Afterward, upgrade the modem to a more current version, and enjoy.
That's roughly what I had to do when the SIM unlock screen popped up on me.

Which s4 do you have? If it is the i337, region lock away may not work as you may not be able to downgrade the modem.