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Ok so I was trying to unlock this samsung s 4 mini lte SPH-L520 but it seems like it's the only model of S 4 mini that i can't find an unlock code for, is this phone un-unlockable? and what is the difference between the SPH-L520 and all the other samsun s 4 mini?
Well one rather big difference of the Sprint S4 mini (SPH-L520) versus the international models (GT-I919X) is that it uses CDMA networks rather than GSM. I am not sure if you can use it on GSM networks with a sim card. I do, however, know that the Verizon version (SCH-I435) which is also CDMA can be unlocked and used on GSM networks. I used the app RegionLock Away from the play store (and here on xda) to unlock and it worked with an AT&T sim card.
Sent from my SCH-I435 using xda app-developers app
I hope your help
shadowanubis said:
Ok so I was trying to unlock this samsung s 4 mini lte SPH-L520 but it seems like it's the only model of S 4 mini that i can't find an unlock code for, is this phone un-unlockable? and what is the difference between the SPH-L520 and all the other samsun s 4 mini?
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Friend also want to unlock the samsung galaxy s4 mini sph-l520, tell me if you managed to do so and if the method by region lock app I run away and if you could explain to me hcer to also do so. I hope your answer and thanks for the help in advance
sprint sph-l520 NOT a worldphone
I talked with the Sprint folks.
The Sprint variant has a sim tray that is just for the data sim (UICC card) not a GSM sim. And it is NOT a worldphone.
So even if you put a GSM sim in it, the radio is not looking for GSM towers (only CDMA).
But the Verizon version IS a world phone, which is why "wiisixtyfour" was able to unlock his.
That being said, since Samsung has made several versions that do have this capability, it seems possible that if someone modifies these things it could work:
-Modified sprint radio to receive GSM radio frequencies/signals (maybe copying the Verizon one?)
-Modified PRL to look for GSM towers
-Modified SIM tray communication to recognize not just DATA sims but GSM sims as well
I have no idea how to do any of these. But would love it if someone a lot smarter than me can take a stab at it. :cyclops:
supermaxkato said:
I talked with the Sprint folks.
The Sprint variant has a sim tray that is just for the data sim (UICC card) not a GSM sim. And it is NOT a worldphone.
So even if you put a GSM sim in it, the radio is not looking for GSM towers (only CDMA).
But the Verizon version IS a world phone, which is why "wiisixtyfour" was able to unlock his.
That being said, since Samsung has made several versions that do have this capability, it seems possible that if someone modifies these things it could work:
-Modified sprint radio to receive GSM radio frequencies/signals (maybe copying the Verizon one?)
-Modified PRL to look for GSM towers
-Modified SIM tray communication to recognize not just DATA sims but GSM sims as well
I have no idea how to do any of these. But would love it if someone a lot smarter than me can take a stab at it. :cyclops:
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Please do
SPH-L520 can run on GSM carrier!
Yes, this is what Sprint told me last summer. But it's incorrect. I have a Sprint S4 mini that works on both Sprint and a TMobile MVNO. Voice, text, data (in refarmed area). Unlocking GSM can be done!
supermaxkato said:
I talked with the Sprint folks.
The Sprint variant has a sim tray that is just for the data sim (UICC card) not a GSM sim. And it is NOT a worldphone.
So even if you put a GSM sim in it, the radio is not looking for GSM towers (only CDMA).
But the Verizon version IS a world phone, which is why "wiisixtyfour" was able to unlock his.
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Click to collapse
avgtuhm, that's only true if you can explain how it was done and it can be replicated.
What does #0111*NETWORKCODE accomplish?
First off, my apologies if I am in error about GSM functioning on my phone.
I will explain what I've done with my Sprint S4 mini and maybe you/someone can tell what is happening. But this is why I thought GSM was/is working on my phone, until supermaxkato questioned this. (Note: I am not a developer.)
My S4 mini is active with Sprint. If I put a GSM SIM in it, of course it does nothing. Try to make a phone call and I get an automated message that it cannot be completed. But after doing the following, I can make calls, send texts, use mobile data.
I powered on with GSM SIM in phone. Entered #0111*NETWORKCODE for my phone in the dialer and hit call button. After this voice, text, data work. However, phone shows "Invalid SIM" in the notifications and the calls and texts come from my Sprint phone vs. the number associated with my GSM SIM. (I didn't realize this until testing last night.)
So did the code just make it so the SIM tray ignores the GSM SIM and functions on Sprint network? (again.. before entering the codes, no calling/texting/data worked with GSM SIM in the phone)
Same results on 2 activated Galaxy phones. Unsuccessful on non-activated S4 Mini.
I am not tech savvy but if anyone wants me to check something on my phone, I will try to get you the information. (I do not have a rooted/modified phone.)
Again, sorry for my mistaken report of success. In retrospect, I should have known it couldn't be that easy.
(Earlier this year, I WAS told by a developer in Colorado that there has been limited success with Sprint S4 minis being unlocked for GSM both internationally and domestic. And a Sprint rep recently told me that this phone can be unlocked internationally for GSM, although I see that it is not on their list of unlockable phones.)
mobile tower problem
mobile network is disabled in my phone samsung galaxy s4 mini sprint spark meid:99000437598028
how to fix this
can GSM phone sim unlock be use with verizon or sprint? I stick my htc one m8 with a verizon sim, and it doesnt detect anything, I'm not sure if I did something wrong or the band just doesnt work all together.
Has anyone accomplished this? Running a Verizon sim in a unlocked Tmobile S4?
i am curious about this as well. i dont think the lte bands are the same though
Verizon is LTE 18. Not worried about that too much. I believe 3g will be all it will get
While a Verizon S4 will work with T-Mobile, I don't think a Verizon S4 will work with T-Mobile. Unless you can somehow enable CDMA radios, which technically don't exist in the gsm variants.
serio22 said:
While a Verizon S4 will work with T-Mobile, I don't think a Verizon S4 will work with T-Mobile. Unless you can somehow enable CDMA radios, which technically don't exist in the gsm variants.
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All S4's are actually gsm, including Sprint and Verizon. Both are unlock able and able to use on other carriers, so CDMA isn't really necessary
ShinySide said:
All S4's are actually gsm, including Sprint and Verizon. Both are unlock able and able to use on other carriers, so CDMA isn't really necessary
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Yes I know many Sprint and Verizon smartphones are world phones, but Verizon still uses CDMA. So wouldn't you will still need a CDMA capable device if you plan to use it with Verizon? If it was the other way around, that's a different story
serio22 said:
Yes I know many Sprint and Verizon smartphones are world phones, but Verizon still uses CDMA. So wouldn't you will still need a CDMA capable device if you plan to use it with Verizon? If it was the other way around, that's a different story
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Yeah but that's why I was telling you.... if a Verizon S4 is gsm and not CDMA, why wouldn't a gsm work on Verizon if the same phone is gsm?
It's probably completely possible. Device wise.... the big problem would be getting Verizon to allow it on the network if it did
Well, i can't unlock the damn thing anyways. Tried 3 times to avail.
Just as soon as I Odin back the NH7 modem i loose the unlock. Very weird.
ShinySide said:
Yeah but that's why I was telling you.... if a Verizon S4 is gsm and not CDMA, why wouldn't a gsm work on Verizon if the same phone is gsm?
It's probably completely possible. Device wise.... the big problem would be getting Verizon to allow it on the network if it did
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that's because it has both gsm and CDMA radios, while T-Mobile's does not. At least as far as we know. I think the gsm portion is there for when you travel for edge and HSPA connectivity and of course also for the use of LTE. If you insert a gsm sim card into a Verizon 'global' gsm/CDMA device, it will display a message "switching to Global mode," enabling full gsm mode. You still need a CDMA capable phone for activation on their network AFAIK.
The Sickness said:
Well, i can't unlock the damn thing anyways. Tried 3 times to avail.
Just as soon as I Odin back the NH7 modem i loose the unlock. Very weird.
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I would give it a shot but don't have a different sim card to test
Don't sweat it. Im keeping it.
I tried my unlocked S4 with my girlfriend's Verizon SIM from her S5 and couldn't get it to connect to anything. I tried every different network mode I had available and couldn't get it to see any sort of a signal. I'm pretty sure I also tried to manually search for a network and saw Verizon as an option, but didn't end up getting anything out of it.
Punkamonk said:
I tried my unlocked S4 with my girlfriend's Verizon SIM from her S5 and couldn't get it to connect to anything. I tried every different network mode I had available and couldn't get it to see any sort of a signal. I'm pretty sure I also tried to manually search for a network and saw Verizon as an option, but didn't end up getting anything out of it.
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It probably picked up the LTE signal, since it is gsm
I want to get this phone but might want to switch carriers soon. I was planning on doing the Sprint EasyPay for it and paying off the rest of the phone if or when I decide to switch carriers. After I pay it off in full and unlock it, would I be able to use it on T-mobile, AT&T, Verizon, or any of their MVNO's? Basically what I am asking is does the Sprint S6 support the necessary bands that the other networks operate on, and if so, would calling or texting still work? I have heard of some phones that have a SIM card slot for the LTE SIM on Sprint, but voice and text don't work once unlocked and used on another carrier.
Thanks,
Kyle
I would really like to know the answer to this as well. I have been searching without a definitive result.
Specifically, can unlocked Sprint phone be used on Verizon?
First of all let me say that before u answer this question I have about as much knowledge on this as a 75yo grandmother, so please keep it extra simple. Most of what I read on these forums might as well be Greek. I have an LG G7 ThinQ. More specifically the G710VMX. I purchased it unlocked and brought it to Tracfone, yes I use Tracfone. It worked with the original SIM card I had from another phone until it didn't, that's when the issues began. Bought a 3 pack VZW, T-Mobile, AT&T sim kit intending to use VZW because has the best service in rural areas. That sim would not work so ended up with T-Mobile sim and bad service. Assumed the phone was GSM only so I suffered. Then I tried to put in an AT&T sim to see if that would give better service and it's GSM so I thought it would work, well it doesn't. Somehow this is only compatible with T-Mobile and US Cellular which is CDMA(? since I assumed phone GSM only). Now Tracfone and T-Mobile reps both are telling me that once they switch to VoLTE the phone will no longer work, I will need a new phone. How is that possible?? I love this phone and hace read that it is capable of operating in VoLTE but the setting to turn it on is not there. And all other networks when given my IMEI tell me it's not compatible. HELP ME PLEASE, I can't afford, nor do I want, a new phone right now.
Turnhoo said:
First of all let me say that before u answer this question I have about as much knowledge on this as a 75yo grandmother, so please keep it extra simple. Most of what I read on these forums might as well be Greek. I have an LG G7 ThinQ. More specifically the G710VMX. I purchased it unlocked and brought it to Tracfone, yes I use Tracfone. It worked with the original SIM card I had from another phone until it didn't, that's when the issues began. Bought a 3 pack VZW, T-Mobile, AT&T sim kit intending to use VZW because has the best service in rural areas. That sim would not work so ended up with T-Mobile sim and bad service. Assumed the phone was GSM only so I suffered. Then I tried to put in an AT&T sim to see if that would give better service and it's GSM so I thought it would work, well it doesn't. Somehow this is only compatible with T-Mobile and US Cellular which is CDMA(? since I assumed phone GSM only). Now Tracfone and T-Mobile reps both are telling me that once they switch to VoLTE the phone will no longer work, I will need a new phone. How is that possible?? I love this phone and hace read that it is capable of operating in VoLTE but the setting to turn it on is not there. And all other networks when given my IMEI tell me it's not compatible. HELP ME PLEASE, I can't afford, nor do I want, a new phone right now.
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time will tell, you know just use your phone as long as it's still working. don't let marketing fool you
Well, the other issue is that I need to get it away from Tracfone T-Mobile because their service is terrible in my area. I can't seem to get either a Tracfone AT&T or Tracfone Verizon SIM to work yet the phone is compatible (according to the websites respectively) with Cricket wireless (AT&T) and US Cellular (cdma). I don't understand... That is why I brought this question to all of you. I live and work in a rural area and it may sound crazy but all I want to do is make stinking phone calls.