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What frequencies are used in 1g 2g 3g 4g considering both CDMA and gsm?
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Can you put the CDMA sim card to the gsm phone?
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.
Is CDMA better or gsm to be used in egypt?
does cdma work in egypt
Can a quad band be used with metropcs?
Quadband phones run on GSM technology. Metropcs run on CDMA technology. These two technologies are not compatible with each other since they operate on different frequencies.
What use is CDMA in mobile?
CDMA is a type of network that cell phone company's use. There are to meager types of networks that are used CDMA and GSM. Cell phone are usally made to work on one or the other network. The Iphone is GSM and Verizons Dare is CDMA but some phone can work on both like the new Blackberry storm.
Difference between CDMA 800 and CDMA 1900?
- CDMA800 (low band) is at freq 800MHz whereas CDMA1900 (high band) is at 1900MHz. - TX power of CDMA800 is lower than the CDMA1900.
Where is CDMA technology used?
CDMA is also known as code-division multiple access. It is used by almost all cell phone provider in the US. CDMA can be used to refer to 2G, 3G, and 4G communications offered by those cell phone providers.
Does the hitachi win w41h cell phone work in the us and if it does with what service?
No, you can't use it in USA, cause it can only be used in Japan, CDMA 1 WIN (CDMA 3), not GSM, and this stupid protocol is only used by Japanese. No, you can't use it in USA, cause it can only be used in Japan, CDMA 1 WIN (CDMA 3), not GSM, and this stupid protocol is only used by Japanese.
Which networking mode is used in india for atm's?
cdma
Can tata indicom sim be used in CDMA mobile?
yes...absolutely CDMA phones only allow certain sim....and tata indicom is one of them people usually take CDMA phone for tata indicom and its converse is also true
Primary carrier and secondary carrier in CDMA?
The two big CDMA carriers in the US are Verizon in first, followed by Sprint. NOTE: CDMA networks are only used in US, China, Japan, India, and few other Asian countries.
Will the iPhone 3 work on Verizon?
The AT&T version of both the iPhone 3GS and iPhone 4 are built on what's called GSM radio technology (used by both AT&T and T-Mobile in the US). Meanwhile, Verizon and Sprint use a completely different technology called CDMA. The two standards are incompatible. They use different radios and operate on different wireless frequencies. So, no, you cannot take your existing AT&T iPhone and walk into a Verizon store and simply switch networks. Even if you own an iPhone 4 you will have to purchase a completely new iPhone 4 with CDMA chips in order for it to work on Verizon.
What types of diodes are used in high frequencies?
Two types used at microwave frequencies are gunn and PIN diodes.
