What are the disadvantages of GSM technology ?

What are the disadvantages of GSM technology ?
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Answer :

Disadvantages of GSM technology. Cell coverage area is limited to about 35 kilometers. Power consumption is relatively high which is about 2 watts. The data transfer rate is comparatively lower which is 56 kbps . Excessive electromagnetic radiation is a threat to biodiversity. The handoff procedure is complicated and in many cases the call is disconnected. Due to the use of pulse transmission technology, the use of mobile phones in hospitals , airplanes, etc. is prohibited.           
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