SM-G900R7 - No mobile connections, just wifi - Galaxy S 5 Q&A, Help & Troubleshooting

Hello,
I came upon a G900R7. I have no idea what carrier it was originally on. But the thing is in a weird state. It doesn't seem to be locked, but it won't take a sim card from multiple carriers. AND the IMEI is not blacklisted. It comes up all green.
When you boot it without a sim card, it complains that there is no sim card. When you put a sim card in it, it just doesn't connect to ANY mobile networks. No calls, sms, data, nothing. I've reset it back to stock, rooted and added TWRP.
I know they say the R7 is from C Spire or nTelos or whatever. But I'm 95% sure it's not from one of those carriers. That carrier doesn't really exist in this area.
Anyway, if you have any ideas on how I can get this thing to get back on a network (re-format EFS or whatever) please let me know. Thanks!

If they say it belongs to C Spire or nTelos or whatever, I'd suggest testing a SIM from one of those carriers....

Yeah I've never even heard of those carriers. And I can't imagine where I would find those services, other than ordering a bunch of stuff online.
There has got to be a way to unlock this thing. From everything I've read, C Spire doesn't lock their devices. And I should be getting an unlock screen if it was locked. So I'm thinking this is a baseband/firmware issue. I mean it's like it doesn't understand what the mobile radios are doing in this phone.
I wonder if there is a way to flash all of the radios back to stop. Perhaps something is wrong with the firmware itself.

Hi! Let me know if yo solve the problem.! I have the same issue! Exactly like that! [email protected]

I have this phone and my carrier is c spire which used to be cellular south.

My friends have phones like this on Triangle Mobile.
This carrier was on a 3g only network until the end of 2015 . They then started using 4G lte but in order to get on their 4G network You have to buy a new ,overpriced phone from them . The phones my friends have , have the 4glte sticker on the back and, a sim card slot but there's no sim card in there. The carrier says they can't update or do anything to the phone that would make it work with 4glte.

Did you ever find a solution to this? I have the cspire s5 and I unlocked it. It was reading Sims for a while but for some reason now it wont and I can't figure out what I need to do to get it to read my at&t sim again.

Related

International calling with the GS4 and GS3??

Going to Cancun on Thursday. So I called Spring about my GS4 & GS3. They enabled the codes so that they connect to the towers in Mexico. But you still get charged $2.99 per call and for each text message. But I thought i read you could put a Sim-Card in these phones for them to work international. Anyone ever tried this?
shaun0207 said:
Going to Cancun on Thursday. So I called Spring about my GS4 & GS3. They enabled the codes so that they connect to the towers in Mexico. But you still get charged $2.99 per call and for each text message. But I thought i read you could put a Sim-Card in these phones for them to work international. Anyone ever tried this?
Click to expand...
Click to collapse
Ok, you need to do a little more research on the phones themselves. The GS3 does not have a removable SIM, it is embedded, so there's no chance of you inserting a local SIM etc.
The GS4 does have an accessible SIM slot but it is locked to Sprint. Even if you insert a non-Sprint SIM it won't work. Sprint want's you to pay their rates for international GSM roaming.
Even if you meet their requirements and get Sprint to unlock your GS4 SIM slot, it will work for calls and SMS with a non-Sprint SIM but no data (apparently some have found out, look in the forums)..
LordLugard said:
Ok, you need to do a little more research on the phones themselves. The GS3 does not have a removable SIM, it is embedded, so there's no chance of you inserting a local SIM etc.
The GS4 does have an accessible SIM slot but it is locked to Sprint. Even if you insert a non-Sprint SIM it won't work. Sprint want's you to pay their rates for international GSM roaming.
Even if you meet their requirements and get Sprint to unlock your GS4 SIM slot, it will work for calls and SMS with a non-Sprint SIM but no data (apparently some have found out, look in the forums)..
Click to expand...
Click to collapse
I haven't been out of the country yet to verify it, but I believe if you're rooted you will be able to get data by making a build.prop edit so you can add the appropriate APNs. Some people have reported though that they didn't need to do this, and data just worked automatically when they put in the SIM. I believe it was a UK carrier's SIM that just worked. I'll have a chance next week to try it out in Costa Rica and see if I can get data working.
Ingenium13 said:
I haven't been out of the country yet to verify it, but I believe if you're rooted you will be able to get data by making a build.prop edit so you can add the appropriate APNs. Some people have reported though that they didn't need to do this, and data just worked automatically when they put in the SIM. I believe it was a UK carrier's SIM that just worked. I'll have a chance next week to try it out in Costa Rica and see if I can get data working.
Click to expand...
Click to collapse
Hmmm. Lots of conflicting info on this. Someone did the build.prop thing and mentioned that the apn options were grayed out, so he basically couldn't edit anything. Even posted screenshots. Please try out your scenario and keep us informed. Thanks.

[Q] SIM not valid - Enter SIM network unlock PIN

I have tried every code mentioned, in here, that was successful for others but not for me.
I started by buying my Galaxy S4, out right, at Walmart for use on Family Mobile. Poor signal everywhere except in my house. The phone has T-Mobile support as far as towers go. After about three weeks I had my phone number transferred to Straight Talk and they sent a SIM card for use with AT&T support. The phone was purchased as an unlocked phone, I did all the codes in this forum to check and sure enough, it is supposed to be unlocked, BUT, every SIM card I get from Straight Talk gives me "INVALID SIM CARD" when I boot up the phone then a black screen comes on with a subdued color message saying, "Sim network unlock PIN" and all the help from Family Mobile, T-Mobile, Straight Talk, Walmart and AT&T, have not helped my situation. I can't write a new APN and store it because I have an invalid SIM card. I have tried the service mode and did everything mention in these forums but no luck so far.
I really like the device(my NOT-Phone) but it does not function as a phone. Can anyone help with this one?
:crying:
gdeem01 said:
I have tried every code mentioned, in here, that was successful for others but not for me.
I started by buying my Galaxy S4, out right, at Walmart for use on Family Mobile. Poor signal everywhere except in my house. The phone has T-Mobile support as far as towers go. After about three weeks I had my phone number transferred to Straight Talk and they sent a SIM card for use with AT&T support. The phone was purchased as an unlocked phone, I did all the codes in this forum to check and sure enough, it is supposed to be unlocked, BUT, every SIM card I get from Straight Talk gives me "INVALID SIM CARD" when I boot up the phone then a black screen comes on with a subdued color message saying, "Sim network unlock PIN" and all the help from Family Mobile, T-Mobile, Straight Talk, Walmart and AT&T, have not helped my situation. I can't write a new APN and store it because I have an invalid SIM card. I have tried the service mode and did everything mention in these forums but no luck so far.
I really like the device(my NOT-Phone) but it does not function as a phone. Can anyone help with this one?
:crying:
Click to expand...
Click to collapse
No warranty in Walmart?!
If it connects to T-Mobile towers out of the box, can you borrow a T-Mobile SIM from soneone and go through the SIM unlock procedure? I'd do that just to make sure it's SIM unlocked. Then try Straight Talk with whatever APNs they use. Do this on stock and once you can confirm you get that far and it's working then go crazy. Good luck.
Locked SIM card
Daistaar said:
If it connects to T-Mobile towers out of the box, can you borrow a T-Mobile SIM from soneone and go through the SIM unlock procedure? I'd do that just to make sure it's SIM unlocked. Then try Straight Talk with whatever APNs they use. Do this on stock and once you can confirm you get that far and it's working then go crazy. Good luck.
Click to expand...
Click to collapse
If I put the original, 1st SIM (Family Mobile) that I bought, back in, I do not get the Unlock Sim code message but I also do not have service because I already had the number ported. I've been that route. I tried the APN routine but it won't save because I don't have service with that SIM card. I go into the unlock routine through the service mode and it says it's already unlocked. Any Sim card from Straight Talk gives me Invalid SIM.
I'm going to return it to Walmart and try another phone.

[Q] Verizon S5 using straight talk att sim?

Hello all,
I bought a Verizon s5 on eBay for $250 the other day. From my reading other forums, I thought that I could just pop my straight talk sim in and it would work.
Apparently that is not the case.
After some reading, I used towel root and was able to get the hidden menus to work , but I really don't know what bands that I should try to enable?
I have a straight talk sim that is set up for an att phone (works perfectly in my S4).
Thus far the phone doesn't recognize my sim at all. It just has a circle where the signal indicator would be.
The phone arrived with a apalachian wireless sim installed and it gets full signal with that sim.
I checked the esn with swappa and it appears to be good.
Any insight would be great. I'm new to all of this and really don't know what I'm doing.
hphillips1 said:
Hello all,
I bought a Verizon s5 on eBay for $250 the other day. From my reading other forums, I thought that I could just pop my straight talk sim in and it would work.
Apparently that is not the case.
After some reading, I used towel root and was able to get the hidden menus to work , but I really don't know what bands that I should try to enable?
I have a straight talk sim that is set up for an att phone (works perfectly in my S4).
Thus far the phone doesn't recognize my sim at all. It just has a circle where the signal indicator would be.
The phone arrived with a apalachian wireless sim installed and it gets full signal with that sim.
I checked the esn with swappa and it appears to be good.
Any insight would be great. I'm new to all of this and really don't know what I'm doing.
Click to expand...
Click to collapse
What APN are you using?
I didnt bother changing the apn because it doesnt recognize my sim. It just has a circle where the signal indicator should be.
Global mode should work fine. The issue might have something to do with the Verizon system not recognizing the ST sim card. Even though the S5 is unlocked, you might have to call VZW to see if it's a privisioning issue. You can check ESN with them too because it could be bad. Good luck and post back if/when you fine the answer.
I am running the same exact setup. Works great for me. Including mms. U should have done a factory reset before rooting. Either way. ....make sure it's in global mode under settings more networks/ network mode. Then download using WiFi since u don't have data yet, straight talk data settings from Google play store. Hit home button open data settings, follow instructions. Good luck.

Cricket Samsung Galaxy s4 root

Hello I got this new phone and I want to be able to put on custom roms and what not, I somehow installed twrp recovery but it only worked once and now it just sits there at the beggining loading i assume cause the phone is not rooted which I have tried to root it and even install the binary su through twrp and it did not work, so how do I go about this thank you so much
Esin8785 said:
Hello I got this new phone and I want to be able to put on custom roms and what not, I somehow installed twrp recovery but it only worked once and now it just sits there at the beggining loading i assume cause the phone is not rooted which I have tried to root it and even install the binary su through twrp and it did not work, so how do I go about this thank you so much
Click to expand...
Click to collapse
Just flash an official firmware via odin and you´ll be alright
Sounds like a bad install of twrp it shouldn't be corrupt flash
Okay I got the phone flashed with custom recovery cwm and even installed cynogenmod on the phone which all works great, I got service last night from straight talk to find out that I cannot use this phone at all for their service for what ever reason even though their website said it would work, flashing the phone to a different service would that work on this phone or would it still be in the same boat I am in now
is your phone CDMA cricket or the new GSM?
its a gsm phone, cricket told me they are switching to cdma and this phone will no longer work with cricket at all, they also told me the phone cannot not be unlocked for other carriers, I was still hoping that it can work with straight talk, i already got the plan and sim cards but it wont take it
Umm, you have that backwards. Cricket was purchased by AT&T and is transitioning from CDMA to GSM. So your Cricket phone is more likely a CDMA model.
http://www.pcmag.com/article2/0,2817,2455001,00.asp
ok
Okay if it's the cdma phone then it can be flashed over to straight talk correct, Here is what I got, I got a samsung galaxy s4 rc970c model from cricket which uses their sim card, I do not have the old sim card from them but i do have the ones from straight talk, when I put that sim card in it, it does not recogonize it at all or askes me anything at all about it, so basically what do i need to do to get this phone to work with straight talk and i still need a number for it as well
I also have a samsung exhibit from metropcs, i would rather have the s4 work with straight talk but for now I just need service with a new number some how thank you so much for all your help
also both of these phones take sim cards so idk if that means gsm or cdma and from what I've been reading this should be a gsm phone as it takes sim card not sure if that is only for internet or not, i downloaded a app sim card reader or what ever and it says it's a cdma phone
Cricket may well be like Verizon, in requiring a SIM card for its LTE service. However, CDMA phones on the Straight Talk BYOP program do not use SIM cards and instead use an activation code. The consequences of this are that if the phone is compatible, LTE will likely not be available to you.
If you purchased a SIM thinking the Straight Talk CDMA Phone Information Page covered GSM phones as well, you're out the cost of the SIM, though you could probably sell it to someone with a GSM phone. If the phone is indeed compatible as you said, you want to buy an activation code instead.
for now all I want is to get this phone that I have working with phones calling, I can care less about the lte internet stuff I do most of everything via wifi anyways from my own network and I'm usually at home and don't need the net on the go that fast, How do I get this phone to work cause their website says it's compatible but it wont take the imie says we do not offer service in that area code and I know for a fact they do I'm in metro denver colorado they have shops everywhere
If the combination of IMEI and zip code says service isn't available, then there's no way to use the phone on Straight Talk in your area. Call them and ask why that is, but I wouldn't expect a good answer. I can only speculate why Straight Talk isn't available in the area for your phone, but I believe it to be because the phone is a Cricket phone. The BYOP program is generally geared to the major carriers. Minor carriers and MVNOs aren't accounted for.

Someone with a little more experience tell me what I'm doing wrong here please.

This is probably something silly and small but I'm pulling my hair out trying to fix this. I bought a G4 play XT1607 unlocked from Best Buy the other week. I also purchased a tracfone SIM activation kit. The kit had 2 sim cards, one GSM and one CDMA. Since I used Verizon service previous to my foray into prepaid plans, I activated the phone with the CDMA SIM card and registered the IMEI with Tracfone. Then I was able to successfully unlock the bootloader following the motorola official procedures, put on TWRP and flashed a LineageOS ROM w/ SU and OpenGAPPS. It worked fine for a couple of days and then *poof* my internet data would no longer connect at all. I rebooted several times and got nothing.
I then saw that there is some LTE/wifi handoff bug and I figured, no biggie, I'll swap my tracfone service to the GSM SIM and pop it in and it'll be good to go. Not so. At first, in fastboot, the screen was saying <Baseband not found> and I couldn't even place a phone call. The phone still doesn't seem to recognize the SIM card and doesn't show any cellular connectivity. I've tried flashing AOKP, LineageOS (both 7.1) and the stock 6.0.1 deodexed several times. I've tried this thread here and using it's 2.35-1 Radio file with the above ROMs which I installed using TWRP as well. None of this is seeming to work so I called Tracfone and they said it should be working and must be on my end. So following this I decided to go fully to flash fully back to stock. I used this file:
https://mirrors.lolinet.com/firmware/moto/harpia/official/RETUS/
and followed these directions
https://forum.xda-developers.com/g4-play/how-to/guide-return-to-stock-firmware-recovery-t3551797
Phone seems to be working fine other than not getting any kind of cellular signal. Even though it should be "factory fresh now" When I called tracfone they didn't seem to sure of themselves and told me it would activate within 2 hours and to call back if I had issues. It's been 4 hours now an dNo sign of signal. Did I mess something up here? Does tracfone need to do something on their send since this phone/IMEI was used previously on their service as CDMA? Or can I just "pop the new SD card and go" Or do I just need to add something like APN settings or similar to get what I have working? I don't want to call tracfone again if I don't have to because they didn't seem to know what to do when I explained it to them and sounded incredulous that one phone did both CDMA and GSM to begin with.
Can anyone help me? I'd like to use this GSM SIM card in my unlocked XT1607 (RETUS). This phone was previously on the same tracfone account with the same phone number but on their CDMA network. What gives? Is this something I messed up or tracfone needs to deal with?
I did some more research and I'm pretty sure this is on Tracfones end. I believe they still have it registered as a CDMA device and it's ignoring my GSM SIM when I turn it on.
Truculent said:
I did some more research and I'm pretty sure this is on Tracfones end. I believe they still have it registered as a CDMA device and it's ignoring my GSM SIM when I turn it on.
Click to expand...
Click to collapse
I don't think that's the issue. Did you set an APN for Tracfone? With the GSM SIM, you have to configure the APN.
Tracfone's site says to go to apn.tracfone.com but that site gives an error. I did find this: http://apn-settings.com/tracfone-apn-settings-step-by-step-configuration-guide/
Or you can check on Howardforums or Turks.
Also G4 Play, also Tracfone BYOP. I, however, did GSM from the getgo to avoid something like this. On my phone, when I installed Lineage, my MEID disappeared entirely (it only shows my IMEI in settings). SIM card reads just fine and APN settings are fine. I do think the initial ROM you installed inhibited the device's ability to read its own MEID (everything hints at these ROMs being made specifically for dual-SIM GSM phones). However, switching to the GSM SIM should have worked, provided you actually transferred your number and didn't just pop the other SIM in (the MEID on the Red "BYOP" card would have needed to be decommissioned).
Here's a thought: Try dialing *22890 on the phone. If it says the phone is programmed for CDMA service, then that could be part of the issue. Also check Settings to see if you have both an MEID and IMEI, or just an IMEI. If your IMEI is 0, then the SIM Card is not being read and they need to ship you a new one.
bw 1 said:
I don't think that's the issue. Did you set an APN for Tracfone? With the GSM SIM, you have to configure the APN.
Tracfone's site says to go to apn.tracfone.com but that site gives an error. I did find this: http://apn-settings.com/tracfone-apn-settings-step-by-step-configuration-guide/
Or you can check on Howardforums or Turks.
Click to expand...
Click to collapse
Just to follow up, I did find the correct web page for Tracfone APN: https://www.tracfone.com/apn
Posting for reference. APN is RESELLER/reseller.

Categories

Resources