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I am moving to the U.S., will my international phone work on U.S. networks? Just like in the United States, your device must be unlocked by your carrier or manufacturer before switching to a new cell phone provider. Most international phones run off GSM technology.

Rae Young at Bell Labs. They diagrammed a network of wireless towers into what they called a cellular layout. Cellular was the chosen term because each tower and its coverage map looked like a biological cell. Eventually, phones that operated on this type of wireless network were called cellular phones.

Yes, GSM phones will work in the US, either on GSM carriers (at&t, T-Mobile) or their resellers (MetroPCS etc.) or MVNOs (Virgin Mobile, LycaMobile etc.) To solve the dilemma of international roaming for call/text/data, get a dual-SIM GSM phone and install both a US and local SIM.

EU Phones are configured for EU countries other than the UK. The configuration may be different from devices configured for the UK market. The EU Phone may not be available in a UK configuration and the price may differ from the UK model.

Global cell phones are usually tri-band or quad-band phones loaded with a special international SIM card. These international SIM cards offer the advantage of a single phone number without expensive international roaming charges. The rates you pay per minute depend on where you are and where you're calling.

In British English they are called mobile phones; in American English they are called cell phones.

Also, while mobile phones used to be mainly known as ?cell phones? or cellular phones, today's mobile phones are more commonly called ?smartphones? because of all of the extra voice and data services that they offer.