What are the disadvantages of using CDMA for a cellular network?

What are the negative points of cellular network?
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"Self-jamming: Unless all of the mobile users are perfectly synchronized, the arriving transmissions from multiple users will not be perfectly aligned on chip boundaries. Thus the spreading sequences of the different users are not orthogonal and there is some level of cross-correlation. This is distinct from either TDMA or FDMA, in which for reasonable time or frequency guardbands, respectively, the received signals are orthogonal or nearly so. Near-far problem: Signals closer to the receiver are received with less attenuation than signals farther away. Given the lack of complete orthogonality, the transmissions from the more remote mobile units may be more difficult to recover. Thus, power control techniques are very important in a CDMA system."
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"Disadvantages of employing CDMA overhaul – Inwards CDMA, the actual phone is actually community locked. There is no option of a number of mobile phone models as well as services for you. You are unable to change to a brand new CDMA earphone devoid of deactivating your own previous earphone prior to triggering your brand-new phone about the same multilevel. CDMA system reporting is not accessible in all international locations."
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