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- CDMA and GSM are Radio technologies and mobile Phone is just an Antenna to receive these Radio Signals. Since both the technologies work on different frequency range and has different modulation shemes therfore the mobile phones for both are different.
- Apart from this 3G tehchnology which is combination of both GSM and CDMA (WCDMA) is compatible with both GSM and CDMA. So a 3G mobile can serve for both GSM and CDMA radio signals.
- SIM (Subcriber Idendity Module) is consists of Credential for network authorization. Since Both GSM and CDMA technologies has different Authorization functions and parameters hence both SIMs are different. Note: In CDMA technology SIM is often called as RUIM (Removable User Idendity Module).
- CDMA uses Different Frequencies than GSM. CDMA also does not require a SIM card.
- Now some companies do provide SIM cards for CDMA connections also, such as Reliance communications and TATA Indicomm in India.
- CDMA can hold more calls per channel on their towers, while GSM drops alot of calls. That is why people are always complaining about T-Mobile and At&t dropped calls. GSM is used internationally while CDMA is mostly used in the domestic United States. CDMA carriers are Verizon, Alltel, Sprint, Cricket....while GSM carriers here in the U.S. are T-Mobile and At&t.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoOkay the different for CDMA (es verizonwireless and sprint) and GSM (at&t) is that they work off of two different wavelengths. no, you can NOT put a GSM sim card into a CDMA phone because CDMA phones do not have places for sim cards. The only ones that do are Global phones, and for it to be a global phone it has to be able to work off of GSM and CDMA...
Wiki User
∙ 10y agoCDMA doesn't have a sim card only gsm do.
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Can i put a t-mobile sim card in a consumer cellular phone?
No...US Cellular is a CDMA and T Mobile is GSM. Incompatible.
Can you put your SIM card into an LG dare?
I´ve read that´s not possible since it is a CDMA and not a GSM.
Can you take sim card out of att phone and put in sprint phone?
No Sprint is a CDMA network. AT&T is a GSM network. Only GSM networks use simcards. Other wise though you can switch sim cards between GSM networks if your phone is unlocked.
Can you put a West Central Wireless SIM card into an LG Chocolate phone?
I have right wireless, its another service coming from the same company, i put my sim card into an LG phone, as long as it is a GSM and its unlocked, and also if it has CDMA then it WILL NOT work.
How do you put a SIM card in a Nextel phone?
You can't put a SIM card on a Nextel Phone, since it's a CDMA carrier. The only carriers that use SIM cards are GSM ones, like AT&T, T Mobile, Centennial Wireless, etc.
Can you take your sim card out of an at and t phone and put it in a sprint phone?
No, because Sprint uses CDMA and AT&T use GSM. America is one of the few countries with a large CDMA presence, every where else uses GSM. Telstra, in Australia closed their CDMA network down, and replaced it with their Next G network, which is GSM.
Can you buy a at and t phone and use it on Verizon?
No. AT&T is a GSM band carrier, and Verizon is a CDMA carrier. GSM uses a SIM card, and CDMA has the carrier data encoded onto the phone itself. Furthermore, they use different frequencies, so even if you somehow could get one on the other, it wouldn't be able to get a signal. Short answer: It's impossible.
Can you put a Verizon number on a t mobile phone?
I don't know for sure but I had a Verizon phone and I tried to unlock to use it in T Mobile system. SAMSUNGimeiUnlock.com told me that they are 2 different technologies and een if I unlock the phone with them it can't be used in any GSM network. I have red more on wikipedia about CDMA and GSM so I would say that if your phone is using both of these standards you can. So gine me your phone model and I can answer for sure.
Will your vodafone sim card work on an unlocked Motorola phone?
If the phone is unlocked you should be able to put any type of sim card in there as long as it is a GSM phone with a sim card slot.
Do you need to have data plan to use an unlocked blackberry?
If your carrier is ATT as the category suggests, then no! You can get a plan without data and put the SIM card into your BlackBerry. You can do this with any GSM phone. GSM carriers include ATT and T-mobile. If you use a CDMA phone (carriers such as Verizon and Sprint), then you would only be able to if the carrier allowed you to, which depends on the salesperson helping you switch to your unlocked BlackBerry. (Keep in mind, CDMA carriers usually do not allow other carrier's phones on their network anyway).
Can a Motorola ROKR E1 from Cingular be put on a Verizon plan?
No, this phone cannot be used on Verizon's plans because the phone is tied to Cingulars service and is a GSM phone, whereas Verizon's network is CDMA, and cannot use the phone. Even if the phone is "unlocked", it will not work on Verizon.
Can you get a cell phone from Cingular and use it on a Verizon plan?
Nope. Totally different Technology. Verizon uses CDMA and Cingular uses GSM CDMA carriers have better coverage in the United States, GSM service has a larger global footprint There ARE Hybrids out there. I think SAMSUNG makes one. But I'm assuming the question has more to do with NOT buying a new phone if you don't have to.
