[Q] SIM Unlocking from ST to TMO - General Questions and Answers

This is a question on a SGS II. Checking with the masterminds that make up XDA as a whole as well as the SGS II thread. Hoping to find some kind of answer.
Sup XDA. Months since I last posted. Question on the SII. My brother has an OLD mytouch 4g from t-mobile. POS. I grabbed him a mint SII on straight talk. Rooted and flashed to 4.2.2 Collective Rom (love the theme and usability!)
Question is, now that I put some time into it, is it possible to use this device on TMO USA? Popping the SIM in does nothing. Added TMO APN (which does nothing as it does not see the carrier) but does not track a signal. Is the radio incompatible or is there another step? Does not give me the classic SIM lock message when booting, so my feeling is that it is just incompatible. Does the phone need an updated TMO sim card? I have Googled and Googled and checked the XDA threads. I found a few sim unlock apps for the SII but they have no effect on this phone.
Any and all help is appreciated! Happy 4th of July!!
George

I don't own an SGS2, so I don't know the specs. First check to make sure the phone is capable of using the tmobile bands e.g. 850, 900, 1700, 1900, 2100 MHz. Not all SGSII are made the same. Also make sure your APN settings are right, reset network settings and readd the correct APN. Delete the ST APN if possible. If not of those work, get a radio from a tmobile SGSII and try using that. Most of the time, changing out radios won't brick your device, so it's worth trying.

Related

what to do?

I have an unlocked tp and i talked with verizon trying to set it up to use it on there network and they say i cant use it with them even tho i have the good esn number and all? what should i do have you guys heard of this or was that guys just being stupid?
I think im going to resell it or trade it for a verizon version. if any one wants to trade for a sprint version thats unlocked and comes with many extras in the orignal bo x with a 1 gig card and the mighty rom with android I will sell or trade it for 160 its in great condition Davey
there are two types of wireless networks in the world: GSM and CDMA. your phone is GSM in hardware = can't be changed), and verizon's network is CDMA = not comaptible.
correct me if im wrong but the sprint is the cdma and the att is the gsm. this phone has mightys cdma rom on it. it would have bricked the phone if it was gsm right at least that is what all the info i have read has told me. I have even flashed it to the stock verizon rom which is cdma and it was fine. I have found a few pages in the wiki about how to use it on the verizon network i will try they look kinda complicated tho.
DadamsJR said:
correct me if im wrong but the sprint is the cdma and the att is the gsm. this phone has mightys cdma rom on it. it would have bricked the phone if it was gsm right at least that is what all the info i have read has told me. I have even flashed it to the stock verizon rom which is cdma and it was fine. I have found a few pages in the wiki about how to use it on the verizon network i will try they look kinda complicated tho.
Click to expand...
Click to collapse
sprint & verizon are cdma, t-mobile & at&t are gsm.
i haven't tried flashing a cdma rom on my fuze... i know it is highly unrecommended. but i am sure there is a way to tell if ur phone is gsm or cdma, probably by looking at the sticker under that battery.
Dad is correct.. Sprint is CDMA jsut like VZW... and there is an easier way to tell if it is GSM or CDMA..... Take off the batter cover.... Do you see a Sim Card? If Yes, then it is a GSM... If No, Then CDMA unless it is GSM and no sim card is in it.. then power it up... it will say SIM CARD MISSING... That will tell you that it is GSM.....
Hope that helps.
I know its cdma for a fact it has sprint across the front and it has a cdma rom on it

[Q] How to get onto AT&T's HSPA network?

Hello,
I am an AT&T customer and I just got this great phone recently. I unlocked the bootloader, flashed Android Revolution and unlocked the SIM today. When I did that, the phone located AT&T's Edge network. I can't get it to recognize AT&T's 3G/HSPA+ network, though.
On the back of my box it shows it should operate on Frequency: GSM:850,900,1800,1900 UTMS:1700,2100,1900. Isn't AT&T on 850 and 1900? I had HSPA+ on my Atrix before getting this phone.
I did a forum search and saw that someone said Tweakker worked for them. I tried that but all it seemed to do was charge me 99 cents. I am still on Edge. Another post mentioned changing the APN settings, but that was for the Bell Sensation. Hope I'm missing something simple. Help?
You need 850 and 1900 UMTS bands.
There are two Sensations. The Z710e and Z710a. You have the e and you need the a.
kamikazees said:
Hello,
I am an AT&T customer and I just got this great phone recently. I unlocked the bootloader, flashed Android Revolution and unlocked the SIM today. When I did that, the phone located AT&T's Edge network. I can't get it to recognize AT&T's 3G/HSPA+ network, though.
On the back of my box it shows it should operate on Frequency: GSM:850,900,1800,1900 UTMS:1700,2100,1900. Isn't AT&T on 850 and 1900? I had HSPA+ on my Atrix before getting this phone.
I did a forum search and saw that someone said Tweakker worked for them. I tried that but all it seemed to do was charge me 99 cents. I am still on Edge. Another post mentioned changing the APN settings, but that was for the Bell Sensation. Hope I'm missing something simple. Help?
Click to expand...
Click to collapse
I'm afraid you have the wrong sensation. Like the post above said, you need the Telstra\Bell\Virgin mobile sensation which is z710a
Thanks, guys. I didn't know I needed both 850 and 1900. I'm having a really hard time finding a phone that works on AT&T and is not one of their own. Oh well, back to Craigslist with this one.
kamikazees said:
Thanks, guys. I didn't know I needed both 850 and 1900. I'm having a really hard time finding a phone that works on AT&T and is not one of their own. Oh well, back to Craigslist with this one.
Click to expand...
Click to collapse
You need to get European version.
Sent from my HTC Sensation 4G using XDA Premium App
No! European, T-mobile and Asian version wont work with at&t 3G. You need to get the z710a sensation

[Q] AWS compatibility

Hi there,
I've done some googling on the topic and i can't seem to find a concrete answer, i was hoping one of you could help me out.
When my plan is finished in december, i'm planning on switching over to WIND mobile since their prices are WAY better than anything any other canadian provider has to offer. Unforunately, their network only really works with AWS compatible phones. Now, my friend had a rogers captivate and switched over to WIND no problem. My infuse is an ATT version (not sure if theres a difference) but theres no mention of AWS compatibility on phonegsm for the captivate or the infuse.
I'm thinking that in that case, the infuse is also compatible?
If anybody has a friend that uses WIND, would it be possible for you to pop in their sim card and see if it works?
Wind Mobile requires your equipment to transer on 1710–1800 MHz, and receive at 2100–2155 MHz.
Due to the fact that the Infuses radio can operate on both 1800 and 2100 Frequency, I would assume that it would work. However, if you go to a Wind Mobile store, they can test your phone for free.
projectvirtue said:
Hi there,
I've done some googling on the topic and i can't seem to find a concrete answer, i was hoping one of you could help me out.
When my plan is finished in december, i'm planning on switching over to WIND mobile since their prices are WAY better than anything any other canadian provider has to offer. Unforunately, their network only really works with AWS compatible phones. Now, my friend had a rogers captivate and switched over to WIND no problem. My infuse is an ATT version (not sure if theres a difference) but theres no mention of AWS compatibility on phonegsm for the captivate or the infuse.
I'm thinking that in that case, the infuse is also compatible?
If anybody has a friend that uses WIND, would it be possible for you to pop in their sim card and see if it works?
Click to expand...
Click to collapse
If it's an AT&T phone, it's not AWS compatible - simple as that.
Try unlocking a T-Mobile phone, much higher chance of working.

[Q] Unlocked Fido Razr HD w/ AT&T Sim: "SIM not allowed MM #3"?

Got my FIDO Razr HD. Rogers SIM = all is good. AT&T sim = asks for unlock code, which i buy online.
After entering code, phone appears to do a factory reset. During the reboot, a box pops up:
"SIM not allowed MM #3"
Now the phone permits "Emergency Calls Only" with the AT&T sim. Rogers SIM = still good.
When I put AT&T sim into my other phone (HTC desire) it works fine on roaming (rogers network). So I know sim + signal is fine.
Don't understand this error message.
Did I mess up the unlock?
advice appreciated, thanks.
Do you have another Canadian SIM you can try? Bell/Telus etc?
grant2 said:
Got my FIDO Razr HD. Rogers SIM = all is good. AT&T sim = asks for unlock code, which i buy online.
After entering code, phone appears to do a factory reset. During the reboot, a box pops up:
"SIM not allowed MM #3"
Now the phone permits "Emergency Calls Only" with the AT&T sim. Rogers SIM = still good.
When I put AT&T sim into my other phone (HTC desire) it works fine on roaming (rogers network). So I know sim + signal is fine.
Don't understand this error message.
Did I mess up the unlock?
advice appreciated, thanks.
Click to expand...
Click to collapse
Have you inserted your fido/rogers simcard when you are in usa... and roaming (put the phone on and get the att signal)... if yes... there are no solution you must roam with rogers... imei is recorded via att and you can t use att on your razr ;( this is a strange things... but is real ... many user report this ! ( not just with the razr ) this is not a phone problem
This is a very... great problem for traveller...
grant2 said:
Got my FIDO Razr HD. Rogers SIM = all is good. AT&T sim = asks for unlock code, which i buy online.
After entering code, phone appears to do a factory reset. During the reboot, a box pops up:
"SIM not allowed MM #3"
Now the phone permits "Emergency Calls Only" with the AT&T sim. Rogers SIM = still good.
When I put AT&T sim into my other phone (HTC desire) it works fine on roaming (rogers network). So I know sim + signal is fine.
Don't understand this error message.
Did I mess up the unlock?
advice appreciated, thanks.
Click to expand...
Click to collapse
I was doing some research for you, have you tried using a different SIM card from AT&T? The SIM might be corrupted.
Sent from my XT925 using Tapatalk 2
Really not sure...
My fathers who travel in usa and canada... have tried 2 others att simcard ... same problems ...
i have see anothers topics on howardforum
o2qc418 said:
Really not sure...
My fathers who travel in usa and canada... have tried 2 others att simcard ... same problems ...
i have see anothers topics on howardforum
Click to expand...
Click to collapse
Are the SIM cards prepaid or postpaid? Did you have to cut then yourself or were they already micro sized?
Sent from my XT925 using Tapatalk 2
I have try with a rogers xt925 last month ... tried with different sim... micro and regular... postpaid and prepaid too... have see many people in the same boat...
Sent from my XT925 using xda premium
If you think AT&T are blocking your phone, then why don't you try T-Mobile...?
... Yes no problem with tmobile or others prepaid carrier on att network...
You just don t roam on att with uour rogers simcard...
Sent from my XT925 using xda premium
Thanks for the replies everyone. to answer the questions:
1) i don't have any other sims right now: just rogers + ATT. Next time i am w/ friends I will ask to borrow telus/bell microsim.
2) they were regular sims that were cut down.
3) haven't had a chance to visit USA since posting topic- but when i do, i will test both cards and also visit an AT&T shop to bug them about it.
Is sim corrupted? I don't think so because it works fine in HTC desire. But I guess trying a new one will prove or disprove.
imei is recorded via att and you can t use att on your razr ;( this is a strange things... but is real ... many user report this ! ( not just with the razr ) this is not a phone problem
Click to expand...
Click to collapse
How do we know this is happening, has someone from AT&T discussed this before?
grant2 said:
Thanks for the replies everyone. to answer the questions:
1) i don't have any other sims right now: just rogers + ATT. Next time i am w/ friends I will ask to borrow telus/bell microsim.
2) they were regular sims that were cut down.
3) haven't had a chance to visit USA since posting topic- but when i do, i will test both cards and also visit an AT&T shop to bug them about it.
Is sim corrupted? I don't think so because it works fine in HTC desire. But I guess trying a new one will prove or disprove.
How do we know this is happening, has someone from AT&T discussed this before?
Click to expand...
Click to collapse
I want to let you know that I was able to use a Bell sim card in my phone. That's what I used to unlock it with.
Sent from my Nexus 7 using Tapatalk HD
grant2 said:
Thanks for the replies everyone. to answer the questions:
1) i don't have any other sims right now: just rogers + ATT. Next time i am w/ friends I will ask to borrow telus/bell microsim.
2) they were regular sims that were cut down.
3) haven't had a chance to visit USA since posting topic- but when i do, i will test both cards and also visit an AT&T shop to bug them about it.
Is sim corrupted? I don't think so because it works fine in HTC desire. But I guess trying a new one will prove or disprove.
How do we know this is happening, has someone from AT&T discussed this before?
Click to expand...
Click to collapse
I am using this phone with at&t with no problems, I took my sim out from my iphone 5 and used a adapter to go to micro sim and it works fine, no issues.
I'm receiving a Fido RAZR HD to be used with AT&T this afternoon, I'll let you guys know if there are any issues.
OOI, is AT&T seen as a much better GSM network than T-Mobile in the US?
I was looking at the T-Mo USA site, and there are some amazing "Monthly4G" SIM only plans (e.g. $30/month for 100 minutes, unlimited texts and 5GB of HSPA data).
This seems much better value than AT&T, Verizon and even Sprint! But is their network sketchy compared to the others?
Sumanji said:
OOI, is AT&T seen as a much better GSM network than T-Mobile in the US?
I was looking at the T-Mo USA site, and there are some amazing "Monthly4G" SIM only plans (e.g. $30/month for 100 minutes, unlimited texts and 5GB of HSPA data).
This seems much better value than AT&T, Verizon and even Sprint! But is their network sketchy compared to the others?
Click to expand...
Click to collapse
AT&T offers the second largest network coverage behind Verizon. They are also one of the two GSM carriers in the United States, and tend to be more popular with mobile phone enthusiasts because their UMTS bands are more common and used with other regions such as Canada or Australia. T-Mobile does indeed offer excellent value, but they use mainly AWS band in addition to PCS band in selected regions, thus making them the lesser choice for using unlocked phones from outside the country.
Hey,
Just looking on wiki:
http://en.wikipedia.org/wiki/T-Mobile_USA#Radio_frequency_spectrum_chart
http://en.wikipedia.org/wiki/AT&T_Mobility#Radio_Frequency_Summary
It looks like T-Mo mainly use 1900 for 2G and 1700 for 3G, whereas AT&T use 850 and 1900 for both 2G/3G, right?
So if I bought a Canadian Razr HD XT925 and came to the US, would I be able to use T-Mo's 3G network? I am guessing no, since it does not support 3G on 1700MHz.
But then there is a note on that Wiki page saying that they now have a roaming agreement with AT&T after the failed acquisition. So if I forced the phone into "WCDMA only" mode from the test menu, would it then fall back onto the AT&T 3G network?
Sorry for taking the thread slightly off topic
Cheers,
Su
Sumanji said:
Hey,
Just looking on wiki:
http://en.wikipedia.org/wiki/T-Mobile_USA#Radio_frequency_spectrum_chart
http://en.wikipedia.org/wiki/AT&T_Mobility#Radio_Frequency_Summary
It looks like T-Mo mainly use 1900 for 2G and 1700 for 3G, whereas AT&T use 850 and 1900 for both 2G/3G, right?
So if I bought a Canadian Razr HD XT925 and came to the US, would I be able to use T-Mo's 3G network? I am guessing no, since it does not support 3G on 1700MHz.
But then there is a note on that Wiki page saying that they now have a roaming agreement with AT&T after the failed acquisition. So if I forced the phone into "WCDMA only" mode from the test menu, would it then fall back onto the AT&T 3G network?
Sorry for taking the thread slightly off topic
Cheers,
Su
Click to expand...
Click to collapse
As you have read, T-Mobile did acquire PCS bands from the failed merger with AT&T, but these bands are not as utilized as their 850 MHz band so it's not as widely available as you may think. Some areas might be able to use the 1900 MHz band for T-Mobile 3G, but I would check with fellow T-Mobile users to confirm first before you dive in headfirst. I know that there are T-Mobile users in the Dallas-Fort Worth area that are getting 3G data connectivity with their unlocked AT&T iPhones.
Well T-Mo do daily plays for like 2 bucks right, so I can always try this out before committing to a contract
Do you think AT&T would be the better bet if I am bringing my own device from Europe?
The reason I ask is that I may be coming to a US college for a couple of years, so naturally, I'm planning ahead to see if my phone will work over there
Sumanji said:
Well T-Mo do daily plays for like 2 bucks right, so I can always try this out before committing to a contract
Do you think AT&T would be the better bet if I am bringing my own device from Europe?
The reason I ask is that I may be coming to a US college for a couple of years, so naturally, I'm planning ahead to see if my phone will work over there
Click to expand...
Click to collapse
If you're using a device from Europe or Asia, then yes, you have a much higher chance of being able to get 3G connectivity with AT&T. Off the top of my head, Nokia seems to be the only one that tries to actively keep AWS band in their radios.
Hmm, so I did a bit of research on GSM Arena. Seems the Nexus line of devices consistently support 1700MHz 3G (including the Nexus S which I currently have).
Guess who cancelled their Nexus 4 order last week, and opted for a Canadian RAZR HD instead...
Whoops

Samsung Galaxy S i9000 on Telus 4G LTE SIM?

I picked up a used Samsung Galaxy S i9000 that was on Virgin (CDMA?). I rooted it, and put JB on it. From another device, I have a Telus data plan that is on 4G. Looking at the i9000 specs, it says it supports GSM and 3G. This where I get confused. The Telus plan I am on is 4G LTE (data). Does this mean that this Sim could fall back to 3G if I use it in my Samsung? I have ran a number of unlock tools (including the Samsung Galaxy S Unlocker) and think that my phone is unlocked, but the radio shows that there is no connection. When I ran the unlocker, it completes but does not say "its done". I can see that I now have the correct APN setting for Telus. The phone sees my SIM and my phone #. And I have the nv_data.bin file ( was not there before running the unlocker). When I look at the phone details, it sees my SIM, knows my phone number etc. It just won't connect. It also has the correct APN settings. If I try to dial a number or use the data, it does not work. Wondering if there are other settings I am missing?
I think the issue is that the sim only runs on Telus 4G and does not fall back to 3G (what the phone is capable of), but again, this is where I am green. I don't know how this works. Does the phone 'ask' the Sim to fall back, or does the network and Sim dictate to the phone what network it will use?
Area of coverage: Burlington Ontario (GTA). Sorry if this has been discussed, but my search terms did not find anything.
Wrong forum, Samsung S i9000 does not equal Samsung Galaxy S 4G (aka T959V or T959W).
My bad. Sorry about that.

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