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Mobile phones us radio frequencies in the micro-wave section of the radio spectrum. This, coupled with the relatively low power output of the handset - means they only transmit & receive over a relatively short distance. The mobile network is an array of 'cells' - radio masts covering a small area, which overlaps with its neighbour. Since microwaves cannot travel through solid objects such as rock, or thick concrete - there will always be some places 'out of sight' of the masts - and thus you have 'black spots'
What else can I help you with?
Why wont my att sim card work in a t-mobile phone?
An AT&T sim card will not work in an T-Mobile phone as it is locked to particular carrier itself... If you want to put your AT&T sim in your T-Mobile phone you can try unlocking your phone
You got a chip Verizon cell phone but your chip from t-mobile do not work on Verizon cell phone?
No it wont you need to get the Verizon cell phone unlocked for the T-mobile chip to work. Look on the Internet as to how to do this.
Why wont your mobile phone which is on Vodaphone work in New York?
The handset (not Vodaphone) needs to be compatible with the New York frequencies.
Can you put a chip from ATT into a phone from T-Mobil and have it work?
Only if the T-Mobile phone is unlocked. If the T-Mobile phone is still locked, only T-Mobile SIMs will work.
You broke your virgin mobile phone can you trade it in for a new one?
No and Yes. Just tell them you lost your phone and they'll give you a used working one for like $10. It wont be new, but it should work.
Will your virgin mobile phone work in France?
== == Depends on the phone's configuration.
Why wont your head phone work?
Maybe the wires of your head phone are damaged...
Why wont your phone work in gta 4?
mine does
Why won't my virgin mobile phone work with zong?
Your Virgin Mobile phone won't work with Zong because it may require a short code. Virgin Mobile is best known for having prepaid cellular phones and does not work with different mobile payment websites.
Why if you ring a mobile number on a house phone why does it not work?
It should work
Will a UK mobile phone charger work in the US?
NO!
What is a 3 mobile and how does it work?
3 mobile is a cellular phone service available in Europe.
