i was on tmobile service with an old phone and sim.
i transfered to att. my xplay wont read my old sim card with my contacts. any suggestions how i can retreive contacts from old sim.
What was your old phone? Were the contacts definitely on the SIM card?
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My sim card is in the phone but its saying there i no sim card... what should i do?
Try cleaning the contacts on the SIM, or go in for a replacement. Most places will not charge you for a replacement.
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.
have a 2 Optimus quantum phones, one never gets 3g, or H, data doesn't seem to work at all (i changed APN settings to fido)
could this be do to old sim card? its really old before 3g network existed, when edge was early
other phone works ok, setup in identical way but sim card is newer from an iPhone 3g i had
so as question above says could it just be due to an old sim card?
Swap the working SIM card between phones and you will have your answer
I think you guessed it. My network (Rogers) required new SIM cards to work on their 3G network. Your carrier may have the same situation.
In my case, Rogers was happy to swap the old SIM for a new one.
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.
Sent in my Nexus 6 phone to get the battery replaced, so, while being out with no phone... I figured I would pop in the nano sim card into the AIwatch C5 slot. Didn't work. It's liked it didn't even acknowledge the SIM card, no phone, no email, no texting etc...
My carrier is a GSM based network, with 3G, LTE capability Nationwide (Canada). All my phones have been unlocked, so I have never had a problem using this SIM before. When I did get my phone back, popped back in the sim card and phone worked immediately. Oh, and my sim card is not sim locked nor encrypted.
Anybody else try out there C5 sport watch with a sim?