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In March 2008, the International Telecommunications Union-Radio communications sector (ITU-R) specified a set of requirements for 4G standards, named the International Mobile Telecommunications Advanced (IMT-Advanced) specification, setting peak speed requirements for 4G service at 100 megabits per second (Mbit/s) for high mobility communication (such as from trains and cars) and 1 gigabit per second (Gbit/s) for low mobility communication (such as pedestrians and stationary users).Since the first-release versions of Mobile Wi MAX and LTE support much less than 1 Gbit/s peak bit rate, they are not fully IMT-Advanced compliant, but are often branded 4G by service providers.This article refers to 4G using IMT-Advanced (International Mobile Telecommunications Advanced), as defined by ITU-R.An IMT-Advanced cellular system must fulfill the following requirements: Implementations of Mobile Wi MAX and first-release LTE are largely considered a stopgap solution that will offer a considerable boost until Wi MAX 2 (based on the 802.16m spec) and LTE Advanced are deployed.A 4G system must provide capabilities defined by ITU in IMT Advanced.Potential and current applications include amended mobile web access, IP telephony, gaming services, high-definition mobile TV, video conferencing, and 3D television.As of October 2010, ITU-R Working Party 5D approved two industry-developed technologies (LTE Advanced and Wireless MAN-Advanced) for inclusion in the ITU's International Mobile Telecommunications Advanced program (IMT-Advanced program), which is focused on global communication systems that will be available several years from now.

It is available in more colours than the Hot 2 and also has a more premium feel.An 84°wide-angle shooting range grants users even more freedom.4G is the fourth generation of broadband cellular network technology, succeeding 3G.The main selling point of the Hot 3 is the Hot selfie features.The 2MP front camera utilizes a 16:9 light chip and 1.6 µm large pixel for high definition picture quality.

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