The 900 MHz radio system is at a lower frequency and will penetrate surfaces more easily ; while 2.4 GHz systems are more reflective and tend to be affected more by buildings, foliage or moisture that can attenuate the signal.
Read moreWhat is a GSM SIM card?
A Global System for Mobile Communication Subscriber Identity Module, or GSM SIM card, is a SIM card that uses the GSM network . Having this card in an unlocked cell phone while using the correct frequency allows a cell phone user to use his cell phone in various countries all over the world.
Read moreIs GSM and SIM card the same?
SIM cards are always used on GSM phones ; for CDMA phones, they are needed only for LTE-capable handsets. SIM cards can also be used in satellite phones, smart watches, computers, or cameras.
Read moreCan you put a SIM card in a GSM phone?
GSM phones require sim cards with unique user’s phone numbers from any network provider . Changing phones is considerably convenient when you can simply transfer a sim card into another GSM phone, and it remains useable— making GSM phones directly associated with the unlocked phone concept.
Read moreWhat is the difference between 900 MHz and 2.4 GHz?
Higher frequencies can use less power, but will reflect off of dense surfaces. The 900MHz radio system is at a lower frequency and will penetrate surfaces more easily . Tempest 2.4GHz systems are more reflective and tend to be affected more by bodies, foliage, or moisture that can attenuate the signal.
Read moreWhat band is 9 MHz?
Comparison of radio band designation standards FrequencyIEEEITUno.30 MHzVHF8250 MHz300 MHzUHF9Radio spectrum – Wikipedia en.wikipedia.org › wiki › Radio_spectrum
Read moreHow do I know what frequency my band is?
For the Android phone, it could use the app: LTE Discovery, tap SIGNALS, check EARFCN(band number), ‘DL Freq and UL Freq’ .
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