GSM

If i buy a gsm unlocked galaxy s4 from the u.s on ebay will it work in Ireland (Europe)

I live in an area where only verizon works. I know there is a Sprint side and a Verizon side to Straighttalk. So can i get my AT&T GSM iPhone 4s to be on the Verizon side of straight talk?

GSM/WCDMA 3G hfsa

Im looking to buy a GS5 soon off craigslist. Ive had good experiences with buying from people on CL and I'm not really worried about being scammed or anything, but I just want to make sure what to look for, research, or ask about when buying the phone. Its easy to see whats wrong or damaged...

Can I use my sim card from my t mobile pre paid phone in an Andriod smartphone gsm dual sim that is shipped from China

My understanding was that Verizon uses CDMA, and CDMA phones don't need a SIM card to do voice, text and 3G. After I found out that the Verizon S4 uses a SIM card, I was somewhat confused. I did a little research and people said the SIM card was necessary for LTE data service. Learning that, I...

So, recently, my father obtained a phone from a close friend of his as a gift, an AT&T Samsung Galaxy SII Skyrocket, Only problem is, we are all on Boost Mobile, Which gets great coverage around the area we live in, and my dad already has some sort of loyalty program where he pays $45 a month...

i hav an application written in c# that can send sms to other mobile phone via a gsm modem. but i have a CDMA modem.how can i change the code so that i can use the CDMA modem. or can i insert the gsm sim in cdma modem and will it work? pls suggest an alternative.thanking u , bluesea :)

I am planning on buying the Sony Z2 which is a gsm phone, but it has 4G LTE Of course i want to buy it unlocked. Can i run the phone on Verizons 4G Network even though Verizons network is CMDA.

I was doing some studying and i have some questions just to make sure i am on the right page. GSM is just for phone connection and 3g and 4g are just data is that correct?

Hi everyone I'm gonna be buying a smartphone to take to Thailand with me. My price range will be 150-250. It needs to be unlocked and gsm. I'm basically just looking for the best overall phone for my money. Right now I'm leaning to the moto g. Seems to be the best new phone in this price range...

So, I want a prepaid sim, not for daily use but just as a side. I am not gonna use it, hardly ever make calls or text. I just need it to be there. Now all the plans out there are kinda expensive for what I need and I can't figure out which one to get. AT&T offers 10c/m plan but I think you have...

Straight Talk says we are in CDMA area. North East Nebraska. Omaha Is a GSM area. Three hours away. When people from Omaha come up here their phones still work. Can I program a GSM phone in a GSM area then use it at home in a CDMA area? Trying to get a Blu.

HTC Rezound phone works with GSM network?

I have a motorola razr hd for verizon it uses a sim card I can use it on at&t can it be unlocked so as to change the netwo?rk

How can I convert a CDMA iphone 4 verizon to GSM?

Hello, How can I transfer contacts from an LG Optimus M+ (Android 2.3 Gingerbread) to a GSM phone (Unlocked or T-mobile). I have not decided on the new phone yet. Is there an easy way to do this, I need a good guide to show me how. Is it also possible to double backup the contacts somewhere...

I want to convert my apple iPhone 3G gsm to CDMA plz let me know if its. Possible

I bought a phone off of amazon and they told me it would be unlocked. However, I tried to register the phone to sprint when it came it and it was not compatible. Is there any way I can still use this phone that needs a sim card while having a CDMA service?

hi planning to buy iphone 5 from sprint and use it on gsm here in us and sometimes in europe and i found out china seller on ebay sellling this http://www.ebay.com/itm/RSIM7-R-SIM7-Unlock-Card-For-iPhone-4s-iPhone-5-IOS5-0-5-1-1-6-0-6-0-1-6-0-2-/170967210059?pt=SIM_Cards&hash=item27ce70984b...