I have a T-Mobile G2 (Hero) with no SIM card at all. Is there any way to get past the "Insert SIM card to place calls" screen. Obviously, I won't be placing calls. I want to play around with the other aspects of this phone.
The 4 corners trick doesn't seem to work on this one.
There isnt a way,just get a free tmobile sim off the net
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Ok, so i was explaining to my lil sister about sim cards, and as i was saying how only Verizon worldphones had sims, i realized that you could, in theory, put a Verizon 4g sim into a 3g worldphone, and.... what would it do? I'm a little hazy on how exactly Sim cards work, but would it be possible to artificially "create" a 4g phone using a 4g Verizon sim?
EDIT: ok, since there are no answers, i realize this is a noobish question, but does the sim card contain the actual 3g/4g/whatever radios, or does it just "enable" them?
The sim card contains the customer account information, so once you lock the signal verizon knows how to properly bill you for your usage.
4G sim cards are different than 3G sim cards although they are in the same format. You can't just swap your Droid 2 Global Sim card and expect to work in your Droid 3 or vice versa becuase the ESN is what is tied to your number, the sim card is just there for roaming purposes (i may be wrong on that one), but i know that even on the global phones, you must have the sim card inserted in the phone to be able to get service with verizon.
The 4G sim card works more like a REAL (GSM) simcard you can swap your sim card into another 4G device and your number will transfer.
Here is another difference, the same sim card on global devices can be reused like you can go to your account and transfer your phone to another account without the need for another sim card. The 4G sim cards become invalid once they are deactivated and you will require a new blank sim card in case you want to activate your phone number again (this usually happens when you switch from a 4G device to a 3G, then move back up to a 4G device), they work much like most GSM sim cards work.
So in sumary, the 4G sim cards works more like a real sim card.
Having a problem with a Telstra HD2 model.
With a Telstra SIM in the phone, I can make and receive calls. When I insert a Vodafone SIM into it, I cannot make or receive calls. Call hangs up straight away.
Device is not network locked as HTC phones are not locked with Telstra. Bars display in task bar.
Tried it with Windows 6.5 (factory default) and Android custom ROM. Currently on custom ROM.
Any thoughts?
I had a similiar problem a few years ago and all i had to do was get a new sim card. I was told i had damaged my sim card some how but i was able to save the contacts, transfer them over to the new sim T-mobile gave me and I have not had another problem since.
If you have access to another phone try and insert both sim cards you have in the other phone. If you have problems in the other phone with the sim card thats not working you can safely say its the sim card thats not working correctly and not a phone issue.
Thanks for the reply Craze.
My SIM's do work as I use my Telstra SIM (that works in the HD2) in my old Nokia and my Vodafone on my Galaxy Nexus Prime.
So on the HD2, my Telstra SIM works where I'm able to receive and make calls and my Vodafone is the opposite.
Could it be the phone? I'm hoping that it is so that I can fix it.
Could it be the network providers? If so, then I'll call them which I've already done but they couldn't give me an answer as to why my Voda SIM does that in the HD2.
Dear all,
I have an issue with my Omnia 7 and need your help. My phone is Unlocked T-Mobile Brand. I can use SIM cards of several company except the one I use regularly. When I insert this SIM, phone is SIM locked and phone function is not working at all. When I press on phone tile, it brings me to home screen. SIM card from other providers work fine. So it is strange to me.
Could you help me? I want it to work with this SIM.
Thanks
That sounds very strange. Surely it must be something to do with that particular SIM card if your phone is SIM unlocked and other providers are working?
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:
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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.
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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.
Hi guys; I did get 2 S5 phones, both unlocked, but they came from different carriers. One is from ATT, the other from Verizon. One is a G900A while the other is a G900V; so the model is matching the carrier.
Now, with the ATT one, I just pop the sim card in, and it works (I have a nano, but it fits in the micro slot), the phone works fine, nothing wrong with it.
The verizon one is not liking it...I get a message that say that the SIM card is not present. I did think it was broken, so I did pop in an old sim card that is not working anymore, which is also the micro size, so the correct size, and the phone say that the sim inserted is not a Verizon sim.
I have no idea why this phone, is doing this. I was told that the phone is unlocked, but the strange thing is that it won't accept any nano sim (while the same S5 from ATT does take it without problems), and that it won't allow me to use anything that is not a Verizon sim. Did I buy a phone that is locked? Should I get another one of the ATT model? Reading on the forum, I did see that you need a verizon sim card for the first activation and then you can swap the T-mobile in, and change the network settings, but I do not have a Verizon sim card available, and before waste 10 dollars at the local store, I would like to know if there is anything else that I can do to make the phone to work. Or if I should just return it; this came from Amazon, so that's easy to fix. Thanks!