Overall 2G is superior or inferior to 3G based on the needs and location of the user. For simple old fashion calls it does not matter which one is used.
Why is 3G More Expensive?
Because of the much greater cost of maintaining a 3G network compared to 2G the service is pricier.Also because of the amount of data a 3G user is likely to download through use the cost is bound to be much higher
Signal
There is less coverage for 3G depending on the region. 3G drains the battery much faster in regions with a weak signal.
However android apps can be used to strengthen signal thus saving power.
How 3G is More Advanced than 2G
3G stands for third generation and 2G the second generation.
3G transmits data a lot faster so downloads infromation and browses the Internet at far greater speed.
Also has features like live TV, GPS and video calling which are all unavailable on 2G.
3G also offers the user greater security.
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