[Q] Testing SIM unlock - myTouch 4G Q&A, Help & Troubleshooting

I'm supposed to have my phone SIM unlocked as per the process of rooting. Is there something else that needs to be done to see another carrier's SIM card? It acknowledges the networks in my area but won't connect to that of the new SIM Card. Any ideas on this?

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g1 sim trouble -

Hi,
i have a new g1 phone, which was unlocked last week. everything worked for a short while, but suddenly i've received a "Your SIM card does not allow a connection to this network" error message, and couldn't find a network anymore.
i've tried to hard-reset, but since then it doesn't recognizes my sim card (or any other sim card). i just get a 'no sim card in phone' message.
what can i do?
thanks!
tal
Go to your carrier's nearest store and get a new SIM card?
The first step might be to remove and CLEAN your simcard.
If that doesn't work, concentrate on REPLACING the simcard.
well, i've already tried 3 different sim cards, none of which were recognized by the G1, so i'm assuming this isn't caused by the card itself. right?
Settings -> Security & location -> Set up SIM card lock -> disable then re-enable Lock SIM card.
That should fix it.
I am also having this problem with my G1; I have no service on any of the sim cards i have tested.
When searching for networks it happily finds them all, but will not connect.
I tried the tip mentioned above with no luck.
If anyone knows the solution that would be fantastic!

can't register on network with g1

I unlocked successfuly my tmobile g1 coming from usa, but now I have no signal and unable to register on network.when I go in settings,wireless control,,mobile networks.when i ask for available networks i have this error message:"error while searching for networks".even when i choose select automatically i have this:"your sim card does not allow a connection to this network".we have GSM, GPRS, and EDGE in my country.Do you have any idea?thanks!
It's your SIM card being locked to a specific network. You might have to contact your vendor.
I don't understand,my sim card locked?I don't have pin code.you are talking about my foreign sim card(non tmobile?)could you explain more?
I don't know why either. I just know that is what happens. I had the same problem with my SIM too when I went on vacation. But I didn't bother trying to fix it. Since I brought the local SIM to use because I didn't want to pay the international rates.

Hardware or software problem? no service

hi!
i recently bought an omnia 7 on ebay, t-mobile locked.
due to i have a vodafon contract, i unlocked it online, with imei unlock.
now the phone accepts my sim card, but i keep getting "no service".
today i bought a t-mobile sim card, just to try, and it is the same.
when i am changing sim cards, the network profile app changes the settings.
i flashed another rom, found here (jj6 uk), i updated to 7720, nothing helps.
i guess it isnt the sim card reader, cause the network profile app recognises any sim card.
is there an antenna problem or just some software thing?
can i fix the antenna by myself, if it is broken or sthing?...
i fall in love with this phone, i dont want to get rid of it...
any suggestions appreciated.

Would some one give me a hand setting my Note 3 up.

So I purchased a used note 3 ( N900A )
I just switch to straight talk. So I had a full size sim and cut it down to fit my note 3 . When I try to go into my apn setting it says insert a sim or something like that.
I know the sims registering , to the phone I can read stuff from it.
So has any one went down the road I am . Is my sim locked or something like that.
Also there is an app called "Sim App." it will first say icc-id and give what looks like about 15-16 numbers then click ok it reads imei check sum gives 4 digits next reads random number gives 8 numbers.
then asks for an unlock code . If entered wrong it will say you have X amount of trys lefts.
Does this have anything to do with why my sim card is not registering to the phone?
Do any sim card works in the phone? Does your sim card work in other phones? Was the phone tested with a sim card before purchase? Was the phone locked to AT&T?
audit13 said:
Do any sim card works in the phone? Does your sim card work in other phones? Was the phone tested with a sim card before purchase? Was the phone locked to AT&T?
Click to expand...
Click to collapse
Yes if I switch the card to the other phone . It works.
Im not sure if this matters the orginal phone was a throw away`alcatel. Its not a smart phone.
Are you using the SIM card in another phone that also uses a micro sim? Does the note 3 recognize any SIM cards?
audit13 said:
Are you using the SIM card in another phone that also uses a micro sim? Does the note 3 recognize any SIM cards?
Click to expand...
Click to collapse
I only have this one sim .
The note is reading the sim card with certain aps . You know how if you up power up a phone , missing a sim it will say so if you pull down the top banner usually with a message like insert sim. When you pull down the top banner it doesn't say that . There is no warning about missing a sim . So it recognizes it has one . I can read stuff off the sim card when i open certain aps that are meant to access sim cards but when I go to change APN setting it will say insert sim card to access network settings.
Without another sim card to try in the phone, it could be the way the sim card was cut or there is something wrong with the phone.
Is the phone sim unlocked? Did you try a sim card in the phone before buying it?
audit13 said:
Without another sim card to try in the phone, it could be the way the sim card was cut or there is something wrong with the phone.
Is the phone sim unlocked? Did you try a sim card in the phone before buying it?
Click to expand...
Click to collapse
I dont think the phones sim is unlocked.
No I didnt try a sim . It was from a family member so Im not to worried. The sim card works in my throw away straight talk phone.
How do you unlock the phones sim?
BTW thank you for your help.
In order to determine if the phone is sim unlocked, power off the phone, insert a sim from another carrier, and power up the phone. If phone asks for a network unlock code, the phone is not sim unlocked and you will need to get an unlock code.
Was the Note 3 n900a from AT&T?

How to tell if phone is carrier locked without another carriers sim card

Is there a way to check if my phone is carrier locked without having another sim to test it?

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